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-rw-r--r--shell/ash.c2241
1 files changed, 1063 insertions, 1178 deletions
diff --git a/shell/ash.c b/shell/ash.c
index 91b6241..bbde91c 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -58,7 +58,7 @@
/* Getopts is used by shell procedures to parse positional parameters.
* You probably want to leave this disabled, and use the busybox getopt
* applet if you want to do this sort of thing. There are some scripts
- * out there that use it, so if you need it, enable it. Most people will
+ * out there that use it, so it you need it, enable. Most people will
* leave this disabled. This adds 1k on an x86 system. */
#undef ASH_GETOPTS
@@ -81,6 +81,7 @@
#undef GLOB_BROKEN
#include <assert.h>
+#include <stddef.h>
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
@@ -142,13 +143,6 @@
#define CSPCL 13 /* these terminate a word */
#define CIGN 14 /* character should be ignored */
-/* Syntax classes for is_ functions */
-#define ISDIGIT 01 /* a digit */
-#define ISUPPER 02 /* an upper case letter */
-#define ISLOWER 04 /* a lower case letter */
-#define ISUNDER 010 /* an underscore */
-#define ISSPECL 020 /* the name of a special parameter */
-
#define SYNBASE 130
#define PEOF -130
@@ -156,18 +150,18 @@
#define TEOF 0
#define TNL 1
-#define TSEMI 2
-#define TBACKGND 3
-#define TAND 4
-#define TOR 5
-#define TPIPE 6
-#define TLP 7
-#define TRP 8
-#define TENDCASE 9
-#define TENDBQUOTE 10
-#define TREDIR 11
-#define TWORD 12
-#define TASSIGN 13
+#define TREDIR 2
+#define TWORD 3
+#define TASSIGN 4
+#define TSEMI 5
+#define TBACKGND 6
+#define TAND 7
+#define TOR 8
+#define TPIPE 9
+#define TLP 10
+#define TRP 11
+#define TENDCASE 12
+#define TENDBQUOTE 13
#define TNOT 14
#define TCASE 15
#define TDO 16
@@ -186,10 +180,6 @@
#define TEND 29
-#define BASESYNTAX (basesyntax + SYNBASE)
-#define DQSYNTAX (dqsyntax + SYNBASE)
-#define SQSYNTAX (sqsyntax + SYNBASE)
-#define ARISYNTAX (arisyntax + SYNBASE)
/* control characters in argument strings */
#define CTLESC '\201'
@@ -202,11 +192,19 @@
#define CTLENDARI '\207'
#define CTLQUOTEMARK '\210'
+
#define is_digit(c) ((c)>='0' && (c)<='9')
-#define is_alpha(c) (((c) < CTLESC || (c) > CTLENDARI) && isalpha((unsigned char) (c)))
#define is_name(c) (((c) < CTLESC || (c) > CTLENDARI) && ((c) == '_' || isalpha((unsigned char) (c))))
#define is_in_name(c) (((c) < CTLESC || (c) > CTLENDARI) && ((c) == '_' || isalnum((unsigned char) (c))))
-#define is_special(c) ((is_type+SYNBASE)[c] & (ISSPECL|ISDIGIT))
+
+/*
+ * is_special(c) evaluates to 1 for c in "!#$*-0123456789?@"; 0 otherwise
+ * (assuming ascii char codes, as the original implementation did)
+ */
+#define is_special(c) \
+ ( (((unsigned int)c) - 33 < 32) \
+ && ((0xc1ff920dUL >> (((unsigned int)c) - 33)) & 1))
+
#define digit_val(c) ((c) - '0')
@@ -688,6 +686,7 @@ static void out2fmt (const char *, ...)
static int xwrite (int, const char *, int);
#define outstr(p,file) fputs(p, file)
+static void outstr (const char *p, FILE *file) { fputs(p, file); }
static void out1str(const char *p) { outstr(p, stdout); }
static void out2str(const char *p) { outstr(p, stderr); }
@@ -697,439 +696,398 @@ static void out2str(const char *p) { outstr(p, stderr); }
static void out2c(int c) { putc(c, stderr); }
#endif
-/* syntax table used when not in quotes */
-static const char basesyntax[257] = {
- CENDFILE, CSPCL, CWORD, CCTL,
- CCTL, CCTL, CCTL, CCTL,
- CCTL, CCTL, CCTL, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CSPCL,
- CNL, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CSPCL, CWORD,
- CDQUOTE, CWORD, CVAR, CWORD,
- CSPCL, CSQUOTE, CSPCL, CSPCL,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CSPCL, CSPCL, CWORD,
- CSPCL, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CBACK, CWORD,
- CWORD, CWORD, CBQUOTE, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CSPCL, CENDVAR,
- CWORD
-};
-
-/* syntax table used when in double quotes */
-static const char dqsyntax[257] = {
- CENDFILE, CIGN, CWORD, CCTL,
- CCTL, CCTL, CCTL, CCTL,
- CCTL, CCTL, CCTL, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CNL, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CCTL,
- CENDQUOTE,CWORD, CVAR, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CCTL, CWORD, CWORD, CCTL,
- CWORD, CCTL, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CCTL, CWORD, CWORD, CCTL,
- CWORD, CCTL, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CCTL, CBACK, CCTL,
- CWORD, CWORD, CBQUOTE, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CENDVAR,
- CCTL
-};
-/* syntax table used when in single quotes */
-static const char sqsyntax[257] = {
- CENDFILE, CIGN, CWORD, CCTL,
- CCTL, CCTL, CCTL, CCTL,
- CCTL, CCTL, CCTL, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CNL, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CCTL,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CENDQUOTE,CWORD, CWORD,
- CCTL, CWORD, CWORD, CCTL,
- CWORD, CCTL, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CCTL, CWORD, CWORD, CCTL,
- CWORD, CCTL, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CCTL, CCTL, CCTL,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CCTL
-};
-
-/* syntax table used when in arithmetic */
-static const char arisyntax[257] = {
- CENDFILE, CIGN, CWORD, CCTL,
- CCTL, CCTL, CCTL, CCTL,
- CCTL, CCTL, CCTL, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CNL, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CDQUOTE, CWORD, CVAR, CWORD,
- CWORD, CSQUOTE, CLP, CRP,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CBACK, CWORD,
- CWORD, CWORD, CBQUOTE, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CWORD,
- CWORD, CWORD, CWORD, CENDVAR,
- CWORD
+#ifdef ASH_OPTIMIZE_FOR_SIZE
+#define USE_SIT_FUNCTION
+#endif
+
+/* number syntax index */
+#define BASESYNTAX 0 /* not in quotes */
+#define DQSYNTAX 1 /* in double quotes */
+#define SQSYNTAX 2 /* in single quotes */
+#define ARISYNTAX 3 /* in arithmetic */
+
+static const char S_I_T[][4] = {
+ /* 0 */ { CSPCL, CIGN, CIGN, CIGN }, /* PEOA */
+ /* 1 */ { CSPCL, CWORD, CWORD, CWORD }, /* ' ' */
+ /* 2 */ { CNL, CNL, CNL, CNL }, /* \n */
+ /* 3 */ { CWORD, CCTL, CCTL, CWORD }, /* !*-/:=?[]~ */
+ /* 4 */ { CDQUOTE, CENDQUOTE, CWORD, CDQUOTE }, /* '"' */
+ /* 5 */ { CVAR, CVAR, CWORD, CVAR }, /* $ */
+ /* 6 */ { CSQUOTE, CWORD, CENDQUOTE, CSQUOTE }, /* "'" */
+ /* 7 */ { CSPCL, CWORD, CWORD, CLP }, /* ( */
+ /* 8 */ { CSPCL, CWORD, CWORD, CRP }, /* ) */
+ /* 9 */ { CBACK, CBACK, CCTL, CBACK }, /* \ */
+ /* 10 */ { CBQUOTE, CBQUOTE, CWORD, CBQUOTE }, /* ` */
+ /* 11 */ { CENDVAR, CENDVAR, CWORD, CENDVAR }, /* } */
+#ifndef USE_SIT_FUNCTION
+ /* 12 */ { CENDFILE, CENDFILE, CENDFILE, CENDFILE }, /* PEOF */
+ /* 13 */ { CWORD, CWORD, CWORD, CWORD }, /* 0-9A-Za-z */
+ /* 14 */ { CCTL, CCTL, CCTL, CCTL } /* CTLESC ... */
+#endif
};
-/* character classification table */
-static const char is_type[257] = {
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, ISSPECL,
- 0, ISSPECL, ISSPECL, 0,
- 0, 0, 0, 0,
- ISSPECL, 0, 0, ISSPECL,
- 0, 0, ISDIGIT, ISDIGIT,
- ISDIGIT, ISDIGIT, ISDIGIT, ISDIGIT,
- ISDIGIT, ISDIGIT, ISDIGIT, ISDIGIT,
- 0, 0, 0, 0,
- 0, ISSPECL, ISSPECL, ISUPPER,
- ISUPPER, ISUPPER, ISUPPER, ISUPPER,
- ISUPPER, ISUPPER, ISUPPER, ISUPPER,
- ISUPPER, ISUPPER, ISUPPER, ISUPPER,
- ISUPPER, ISUPPER, ISUPPER, ISUPPER,
- ISUPPER, ISUPPER, ISUPPER, ISUPPER,
- ISUPPER, ISUPPER, ISUPPER, ISUPPER,
- ISUPPER, 0, 0, 0,
- 0, ISUNDER, 0, ISLOWER,
- ISLOWER, ISLOWER, ISLOWER, ISLOWER,
- ISLOWER, ISLOWER, ISLOWER, ISLOWER,
- ISLOWER, ISLOWER, ISLOWER, ISLOWER,
- ISLOWER, ISLOWER, ISLOWER, ISLOWER,
- ISLOWER, ISLOWER, ISLOWER, ISLOWER,
- ISLOWER, ISLOWER, ISLOWER, ISLOWER,
- ISLOWER, 0, 0, 0,
- 0
-};
+#ifdef USE_SIT_FUNCTION
-/* Array indicating which tokens mark the end of a list */
-static const char tokendlist[] = {
- 1,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- 1,
- 1,
- 1,
- 0,
- 0,
- 0,
- 0,
- 0,
- 1,
- 1,
- 1,
- 1,
- 1,
- 1,
- 0,
- 0,
- 0,
- 1,
- 0,
- 0,
- 0,
- 1,
-};
+#define U_C(c) ((unsigned char)(c))
-static const char *const tokname[] = {
- "end of file",
- "newline",
- "\";\"",
- "\"&\"",
- "\"&&\"",
- "\"||\"",
- "\"|\"",
- "\"(\"",
- "\")\"",
- "\";;\"",
- "\"`\"",
- "redirection",
- "word",
- "assignment",
- "\"!\"",
- "\"case\"",
- "\"do\"",
- "\"done\"",
- "\"elif\"",
- "\"else\"",
- "\"esac\"",
- "\"fi\"",
- "\"for\"",
- "\"if\"",
- "\"in\"",
- "\"then\"",
- "\"until\"",
- "\"while\"",
- "\"{\"",
- "\"}\"",
+static int SIT(int c, int syntax)
+{
+ static const char spec_symbls[]="\t\n !\"$&'()*-/:;<=>?[\\]`|}~";
+ static const char syntax_index_table [] = {
+ 1, 2, 1, 3, 4, 5, 1, 6, /* "\t\n !\"$&'" */
+ 7, 8, 3, 3, 3, 3, 1, 1, /* "()*-/:;<" */
+ 3, 1, 3, 3, 9, 3,10, 1, /* "=>?[\\]`|" */
+ 11,3 }; /* "}~" */
+ const char *s;
+ int indx;
+
+ if(c==PEOF) /* 2^8+2 */
+ return CENDFILE;
+ if(c==PEOA) /* 2^8+1 */
+ indx = 0;
+ else if(U_C(c)>=U_C(CTLESC) && U_C(c)<=U_C(CTLQUOTEMARK))
+ return CCTL;
+ else {
+ s = strchr(spec_symbls, c);
+ if(s==0)
+ return CWORD;
+ indx = syntax_index_table[(s-spec_symbls)];
+ }
+ return S_I_T[indx][syntax];
+}
+
+#else /* USE_SIT_FUNCTION */
+
+#define SIT(c, syntax) S_I_T[(int)syntax_index_table[((int)c)+SYNBASE]][syntax]
+
+#define CSPCL_CIGN_CIGN_CIGN 0
+#define CSPCL_CWORD_CWORD_CWORD 1
+#define CNL_CNL_CNL_CNL 2
+#define CWORD_CCTL_CCTL_CWORD 3
+#define CDQUOTE_CENDQUOTE_CWORD_CDQUOTE 4
+#define CVAR_CVAR_CWORD_CVAR 5
+#define CSQUOTE_CWORD_CENDQUOTE_CSQUOTE 6
+#define CSPCL_CWORD_CWORD_CLP 7
+#define CSPCL_CWORD_CWORD_CRP 8
+#define CBACK_CBACK_CCTL_CBACK 9
+#define CBQUOTE_CBQUOTE_CWORD_CBQUOTE 10
+#define CENDVAR_CENDVAR_CWORD_CENDVAR 11
+#define CENDFILE_CENDFILE_CENDFILE_CENDFILE 12
+#define CWORD_CWORD_CWORD_CWORD 13
+#define CCTL_CCTL_CCTL_CCTL 14
+
+static const char syntax_index_table[258] = {
+ /* BASESYNTAX_DQSYNTAX_SQSYNTAX_ARISYNTAX */
+ /* 0 -130 PEOF */ CENDFILE_CENDFILE_CENDFILE_CENDFILE,
+ /* 1 -129 PEOA */ CSPCL_CIGN_CIGN_CIGN,
+ /* 2 -128 0xff */ CWORD_CWORD_CWORD_CWORD,
+ /* 3 -127 */ CCTL_CCTL_CCTL_CCTL, /* CTLQUOTEMARK */
+ /* 4 -126 */ CCTL_CCTL_CCTL_CCTL,
+ /* 5 -125 */ CCTL_CCTL_CCTL_CCTL,
+ /* 6 -124 */ CCTL_CCTL_CCTL_CCTL,
+ /* 7 -123 */ CCTL_CCTL_CCTL_CCTL,
+ /* 8 -122 */ CCTL_CCTL_CCTL_CCTL,
+ /* 9 -121 */ CCTL_CCTL_CCTL_CCTL,
+ /* 10 -120 */ CCTL_CCTL_CCTL_CCTL, /* CTLESC */
+ /* 11 -119 */ CWORD_CWORD_CWORD_CWORD,
+ /* 12 -118 */ CWORD_CWORD_CWORD_CWORD,
+ /* 13 -117 */ CWORD_CWORD_CWORD_CWORD,
+ /* 14 -116 */ CWORD_CWORD_CWORD_CWORD,
+ /* 15 -115 */ CWORD_CWORD_CWORD_CWORD,
+ /* 16 -114 */ CWORD_CWORD_CWORD_CWORD,
+ /* 17 -113 */ CWORD_CWORD_CWORD_CWORD,
+ /* 18 -112 */ CWORD_CWORD_CWORD_CWORD,
+ /* 19 -111 */ CWORD_CWORD_CWORD_CWORD,
+ /* 20 -110 */ CWORD_CWORD_CWORD_CWORD,
+ /* 21 -109 */ CWORD_CWORD_CWORD_CWORD,
+ /* 22 -108 */ CWORD_CWORD_CWORD_CWORD,
+ /* 23 -107 */ CWORD_CWORD_CWORD_CWORD,
+ /* 24 -106 */ CWORD_CWORD_CWORD_CWORD,
+ /* 25 -105 */ CWORD_CWORD_CWORD_CWORD,
+ /* 26 -104 */ CWORD_CWORD_CWORD_CWORD,
+ /* 27 -103 */ CWORD_CWORD_CWORD_CWORD,
+ /* 28 -102 */ CWORD_CWORD_CWORD_CWORD,
+ /* 29 -101 */ CWORD_CWORD_CWORD_CWORD,
+ /* 30 -100 */ CWORD_CWORD_CWORD_CWORD,
+ /* 31 -99 */ CWORD_CWORD_CWORD_CWORD,
+ /* 32 -98 */ CWORD_CWORD_CWORD_CWORD,
+ /* 33 -97 */ CWORD_CWORD_CWORD_CWORD,
+ /* 34 -96 */ CWORD_CWORD_CWORD_CWORD,
+ /* 35 -95 */ CWORD_CWORD_CWORD_CWORD,
+ /* 36 -94 */ CWORD_CWORD_CWORD_CWORD,
+ /* 37 -93 */ CWORD_CWORD_CWORD_CWORD,
+ /* 38 -92 */ CWORD_CWORD_CWORD_CWORD,
+ /* 39 -91 */ CWORD_CWORD_CWORD_CWORD,
+ /* 40 -90 */ CWORD_CWORD_CWORD_CWORD,
+ /* 41 -89 */ CWORD_CWORD_CWORD_CWORD,
+ /* 42 -88 */ CWORD_CWORD_CWORD_CWORD,
+ /* 43 -87 */ CWORD_CWORD_CWORD_CWORD,
+ /* 44 -86 */ CWORD_CWORD_CWORD_CWORD,
+ /* 45 -85 */ CWORD_CWORD_CWORD_CWORD,
+ /* 46 -84 */ CWORD_CWORD_CWORD_CWORD,
+ /* 47 -83 */ CWORD_CWORD_CWORD_CWORD,
+ /* 48 -82 */ CWORD_CWORD_CWORD_CWORD,
+ /* 49 -81 */ CWORD_CWORD_CWORD_CWORD,
+ /* 50 -80 */ CWORD_CWORD_CWORD_CWORD,
+ /* 51 -79 */ CWORD_CWORD_CWORD_CWORD,
+ /* 52 -78 */ CWORD_CWORD_CWORD_CWORD,
+ /* 53 -77 */ CWORD_CWORD_CWORD_CWORD,
+ /* 54 -76 */ CWORD_CWORD_CWORD_CWORD,
+ /* 55 -75 */ CWORD_CWORD_CWORD_CWORD,
+ /* 56 -74 */ CWORD_CWORD_CWORD_CWORD,
+ /* 57 -73 */ CWORD_CWORD_CWORD_CWORD,
+ /* 58 -72 */ CWORD_CWORD_CWORD_CWORD,
+ /* 59 -71 */ CWORD_CWORD_CWORD_CWORD,
+ /* 60 -70 */ CWORD_CWORD_CWORD_CWORD,
+ /* 61 -69 */ CWORD_CWORD_CWORD_CWORD,
+ /* 62 -68 */ CWORD_CWORD_CWORD_CWORD,
+ /* 63 -67 */ CWORD_CWORD_CWORD_CWORD,
+ /* 64 -66 */ CWORD_CWORD_CWORD_CWORD,
+ /* 65 -65 */ CWORD_CWORD_CWORD_CWORD,
+ /* 66 -64 */ CWORD_CWORD_CWORD_CWORD,
+ /* 67 -63 */ CWORD_CWORD_CWORD_CWORD,
+ /* 68 -62 */ CWORD_CWORD_CWORD_CWORD,
+ /* 69 -61 */ CWORD_CWORD_CWORD_CWORD,
+ /* 70 -60 */ CWORD_CWORD_CWORD_CWORD,
+ /* 71 -59 */ CWORD_CWORD_CWORD_CWORD,
+ /* 72 -58 */ CWORD_CWORD_CWORD_CWORD,
+ /* 73 -57 */ CWORD_CWORD_CWORD_CWORD,
+ /* 74 -56 */ CWORD_CWORD_CWORD_CWORD,
+ /* 75 -55 */ CWORD_CWORD_CWORD_CWORD,
+ /* 76 -54 */ CWORD_CWORD_CWORD_CWORD,
+ /* 77 -53 */ CWORD_CWORD_CWORD_CWORD,
+ /* 78 -52 */ CWORD_CWORD_CWORD_CWORD,
+ /* 79 -51 */ CWORD_CWORD_CWORD_CWORD,
+ /* 80 -50 */ CWORD_CWORD_CWORD_CWORD,
+ /* 81 -49 */ CWORD_CWORD_CWORD_CWORD,
+ /* 82 -48 */ CWORD_CWORD_CWORD_CWORD,
+ /* 83 -47 */ CWORD_CWORD_CWORD_CWORD,
+ /* 84 -46 */ CWORD_CWORD_CWORD_CWORD,
+ /* 85 -45 */ CWORD_CWORD_CWORD_CWORD,
+ /* 86 -44 */ CWORD_CWORD_CWORD_CWORD,
+ /* 87 -43 */ CWORD_CWORD_CWORD_CWORD,
+ /* 88 -42 */ CWORD_CWORD_CWORD_CWORD,
+ /* 89 -41 */ CWORD_CWORD_CWORD_CWORD,
+ /* 90 -40 */ CWORD_CWORD_CWORD_CWORD,
+ /* 91 -39 */ CWORD_CWORD_CWORD_CWORD,
+ /* 92 -38 */ CWORD_CWORD_CWORD_CWORD,
+ /* 93 -37 */ CWORD_CWORD_CWORD_CWORD,
+ /* 94 -36 */ CWORD_CWORD_CWORD_CWORD,
+ /* 95 -35 */ CWORD_CWORD_CWORD_CWORD,
+ /* 96 -34 */ CWORD_CWORD_CWORD_CWORD,
+ /* 97 -33 */ CWORD_CWORD_CWORD_CWORD,
+ /* 98 -32 */ CWORD_CWORD_CWORD_CWORD,
+ /* 99 -31 */ CWORD_CWORD_CWORD_CWORD,
+ /* 100 -30 */ CWORD_CWORD_CWORD_CWORD,
+ /* 101 -29 */ CWORD_CWORD_CWORD_CWORD,
+ /* 102 -28 */ CWORD_CWORD_CWORD_CWORD,
+ /* 103 -27 */ CWORD_CWORD_CWORD_CWORD,
+ /* 104 -26 */ CWORD_CWORD_CWORD_CWORD,
+ /* 105 -25 */ CWORD_CWORD_CWORD_CWORD,
+ /* 106 -24 */ CWORD_CWORD_CWORD_CWORD,
+ /* 107 -23 */ CWORD_CWORD_CWORD_CWORD,
+ /* 108 -22 */ CWORD_CWORD_CWORD_CWORD,
+ /* 109 -21 */ CWORD_CWORD_CWORD_CWORD,
+ /* 110 -20 */ CWORD_CWORD_CWORD_CWORD,
+ /* 111 -19 */ CWORD_CWORD_CWORD_CWORD,
+ /* 112 -18 */ CWORD_CWORD_CWORD_CWORD,
+ /* 113 -17 */ CWORD_CWORD_CWORD_CWORD,
+ /* 114 -16 */ CWORD_CWORD_CWORD_CWORD,
+ /* 115 -15 */ CWORD_CWORD_CWORD_CWORD,
+ /* 116 -14 */ CWORD_CWORD_CWORD_CWORD,
+ /* 117 -13 */ CWORD_CWORD_CWORD_CWORD,
+ /* 118 -12 */ CWORD_CWORD_CWORD_CWORD,
+ /* 119 -11 */ CWORD_CWORD_CWORD_CWORD,
+ /* 120 -10 */ CWORD_CWORD_CWORD_CWORD,
+ /* 121 -9 */ CWORD_CWORD_CWORD_CWORD,
+ /* 122 -8 */ CWORD_CWORD_CWORD_CWORD,
+ /* 123 -7 */ CWORD_CWORD_CWORD_CWORD,
+ /* 124 -6 */ CWORD_CWORD_CWORD_CWORD,
+ /* 125 -5 */ CWORD_CWORD_CWORD_CWORD,
+ /* 126 -4 */ CWORD_CWORD_CWORD_CWORD,
+ /* 127 -3 */ CWORD_CWORD_CWORD_CWORD,
+ /* 128 -2 */ CWORD_CWORD_CWORD_CWORD,
+ /* 129 -1 */ CWORD_CWORD_CWORD_CWORD,
+ /* 130 0 */ CWORD_CWORD_CWORD_CWORD,
+ /* 131 1 */ CWORD_CWORD_CWORD_CWORD,
+ /* 132 2 */ CWORD_CWORD_CWORD_CWORD,
+ /* 133 3 */ CWORD_CWORD_CWORD_CWORD,
+ /* 134 4 */ CWORD_CWORD_CWORD_CWORD,
+ /* 135 5 */ CWORD_CWORD_CWORD_CWORD,
+ /* 136 6 */ CWORD_CWORD_CWORD_CWORD,
+ /* 137 7 */ CWORD_CWORD_CWORD_CWORD,
+ /* 138 8 */ CWORD_CWORD_CWORD_CWORD,
+ /* 139 9 "\t" */ CSPCL_CWORD_CWORD_CWORD,
+ /* 140 10 "\n" */ CNL_CNL_CNL_CNL,
+ /* 141 11 */ CWORD_CWORD_CWORD_CWORD,
+ /* 142 12 */ CWORD_CWORD_CWORD_CWORD,
+ /* 143 13 */ CWORD_CWORD_CWORD_CWORD,
+ /* 144 14 */ CWORD_CWORD_CWORD_CWORD,
+ /* 145 15 */ CWORD_CWORD_CWORD_CWORD,
+ /* 146 16 */ CWORD_CWORD_CWORD_CWORD,
+ /* 147 17 */ CWORD_CWORD_CWORD_CWORD,
+ /* 148 18 */ CWORD_CWORD_CWORD_CWORD,
+ /* 149 19 */ CWORD_CWORD_CWORD_CWORD,
+ /* 150 20 */ CWORD_CWORD_CWORD_CWORD,
+ /* 151 21 */ CWORD_CWORD_CWORD_CWORD,
+ /* 152 22 */ CWORD_CWORD_CWORD_CWORD,
+ /* 153 23 */ CWORD_CWORD_CWORD_CWORD,
+ /* 154 24 */ CWORD_CWORD_CWORD_CWORD,
+ /* 155 25 */ CWORD_CWORD_CWORD_CWORD,
+ /* 156 26 */ CWORD_CWORD_CWORD_CWORD,
+ /* 157 27 */ CWORD_CWORD_CWORD_CWORD,
+ /* 158 28 */ CWORD_CWORD_CWORD_CWORD,
+ /* 159 29 */ CWORD_CWORD_CWORD_CWORD,
+ /* 160 30 */ CWORD_CWORD_CWORD_CWORD,
+ /* 161 31 */ CWORD_CWORD_CWORD_CWORD,
+ /* 162 32 " " */ CSPCL_CWORD_CWORD_CWORD,
+ /* 163 33 "!" */ CWORD_CCTL_CCTL_CWORD,
+ /* 164 34 """ */ CDQUOTE_CENDQUOTE_CWORD_CDQUOTE,
+ /* 165 35 "#" */ CWORD_CWORD_CWORD_CWORD,
+ /* 166 36 "$" */ CVAR_CVAR_CWORD_CVAR,
+ /* 167 37 "%" */ CWORD_CWORD_CWORD_CWORD,
+ /* 168 38 "&" */ CSPCL_CWORD_CWORD_CWORD,
+ /* 169 39 "'" */ CSQUOTE_CWORD_CENDQUOTE_CSQUOTE,
+ /* 170 40 "(" */ CSPCL_CWORD_CWORD_CLP,
+ /* 171 41 ")" */ CSPCL_CWORD_CWORD_CRP,
+ /* 172 42 "*" */ CWORD_CCTL_CCTL_CWORD,
+ /* 173 43 "+" */ CWORD_CWORD_CWORD_CWORD,
+ /* 174 44 "," */ CWORD_CWORD_CWORD_CWORD,
+ /* 175 45 "-" */ CWORD_CCTL_CCTL_CWORD,
+ /* 176 46 "." */ CWORD_CWORD_CWORD_CWORD,
+ /* 177 47 "/" */ CWORD_CCTL_CCTL_CWORD,
+ /* 178 48 "0" */ CWORD_CWORD_CWORD_CWORD,
+ /* 179 49 "1" */ CWORD_CWORD_CWORD_CWORD,
+ /* 180 50 "2" */ CWORD_CWORD_CWORD_CWORD,
+ /* 181 51 "3" */ CWORD_CWORD_CWORD_CWORD,
+ /* 182 52 "4" */ CWORD_CWORD_CWORD_CWORD,
+ /* 183 53 "5" */ CWORD_CWORD_CWORD_CWORD,
+ /* 184 54 "6" */ CWORD_CWORD_CWORD_CWORD,
+ /* 185 55 "7" */ CWORD_CWORD_CWORD_CWORD,
+ /* 186 56 "8" */ CWORD_CWORD_CWORD_CWORD,
+ /* 187 57 "9" */ CWORD_CWORD_CWORD_CWORD,
+ /* 188 58 ":" */ CWORD_CCTL_CCTL_CWORD,
+ /* 189 59 ";" */ CSPCL_CWORD_CWORD_CWORD,
+ /* 190 60 "<" */ CSPCL_CWORD_CWORD_CWORD,
+ /* 191 61 "=" */ CWORD_CCTL_CCTL_CWORD,
+ /* 192 62 ">" */ CSPCL_CWORD_CWORD_CWORD,
+ /* 193 63 "?" */ CWORD_CCTL_CCTL_CWORD,
+ /* 194 64 "@" */ CWORD_CWORD_CWORD_CWORD,
+ /* 195 65 "A" */ CWORD_CWORD_CWORD_CWORD,
+ /* 196 66 "B" */ CWORD_CWORD_CWORD_CWORD,
+ /* 197 67 "C" */ CWORD_CWORD_CWORD_CWORD,
+ /* 198 68 "D" */ CWORD_CWORD_CWORD_CWORD,
+ /* 199 69 "E" */ CWORD_CWORD_CWORD_CWORD,
+ /* 200 70 "F" */ CWORD_CWORD_CWORD_CWORD,
+ /* 201 71 "G" */ CWORD_CWORD_CWORD_CWORD,
+ /* 202 72 "H" */ CWORD_CWORD_CWORD_CWORD,
+ /* 203 73 "I" */ CWORD_CWORD_CWORD_CWORD,
+ /* 204 74 "J" */ CWORD_CWORD_CWORD_CWORD,
+ /* 205 75 "K" */ CWORD_CWORD_CWORD_CWORD,
+ /* 206 76 "L" */ CWORD_CWORD_CWORD_CWORD,
+ /* 207 77 "M" */ CWORD_CWORD_CWORD_CWORD,
+ /* 208 78 "N" */ CWORD_CWORD_CWORD_CWORD,
+ /* 209 79 "O" */ CWORD_CWORD_CWORD_CWORD,
+ /* 210 80 "P" */ CWORD_CWORD_CWORD_CWORD,
+ /* 211 81 "Q" */ CWORD_CWORD_CWORD_CWORD,
+ /* 212 82 "R" */ CWORD_CWORD_CWORD_CWORD,
+ /* 213 83 "S" */ CWORD_CWORD_CWORD_CWORD,
+ /* 214 84 "T" */ CWORD_CWORD_CWORD_CWORD,
+ /* 215 85 "U" */ CWORD_CWORD_CWORD_CWORD,
+ /* 216 86 "V" */ CWORD_CWORD_CWORD_CWORD,
+ /* 217 87 "W" */ CWORD_CWORD_CWORD_CWORD,
+ /* 218 88 "X" */ CWORD_CWORD_CWORD_CWORD,
+ /* 219 89 "Y" */ CWORD_CWORD_CWORD_CWORD,
+ /* 220 90 "Z" */ CWORD_CWORD_CWORD_CWORD,
+ /* 221 91 "[" */ CWORD_CCTL_CCTL_CWORD,
+ /* 222 92 "\" */ CBACK_CBACK_CCTL_CBACK,
+ /* 223 93 "]" */ CWORD_CCTL_CCTL_CWORD,
+ /* 224 94 "^" */ CWORD_CWORD_CWORD_CWORD,
+ /* 225 95 "_" */ CWORD_CWORD_CWORD_CWORD,
+ /* 226 96 "`" */ CBQUOTE_CBQUOTE_CWORD_CBQUOTE,
+ /* 227 97 "a" */ CWORD_CWORD_CWORD_CWORD,
+ /* 228 98 "b" */ CWORD_CWORD_CWORD_CWORD,
+ /* 229 99 "c" */ CWORD_CWORD_CWORD_CWORD,
+ /* 230 100 "d" */ CWORD_CWORD_CWORD_CWORD,
+ /* 231 101 "e" */ CWORD_CWORD_CWORD_CWORD,
+ /* 232 102 "f" */ CWORD_CWORD_CWORD_CWORD,
+ /* 233 103 "g" */ CWORD_CWORD_CWORD_CWORD,
+ /* 234 104 "h" */ CWORD_CWORD_CWORD_CWORD,
+ /* 235 105 "i" */ CWORD_CWORD_CWORD_CWORD,
+ /* 236 106 "j" */ CWORD_CWORD_CWORD_CWORD,
+ /* 237 107 "k" */ CWORD_CWORD_CWORD_CWORD,
+ /* 238 108 "l" */ CWORD_CWORD_CWORD_CWORD,
+ /* 239 109 "m" */ CWORD_CWORD_CWORD_CWORD,
+ /* 240 110 "n" */ CWORD_CWORD_CWORD_CWORD,
+ /* 241 111 "o" */ CWORD_CWORD_CWORD_CWORD,
+ /* 242 112 "p" */ CWORD_CWORD_CWORD_CWORD,
+ /* 243 113 "q" */ CWORD_CWORD_CWORD_CWORD,
+ /* 244 114 "r" */ CWORD_CWORD_CWORD_CWORD,
+ /* 245 115 "s" */ CWORD_CWORD_CWORD_CWORD,
+ /* 246 116 "t" */ CWORD_CWORD_CWORD_CWORD,
+ /* 247 117 "u" */ CWORD_CWORD_CWORD_CWORD,
+ /* 248 118 "v" */ CWORD_CWORD_CWORD_CWORD,
+ /* 249 119 "w" */ CWORD_CWORD_CWORD_CWORD,
+ /* 250 120 "x" */ CWORD_CWORD_CWORD_CWORD,
+ /* 251 121 "y" */ CWORD_CWORD_CWORD_CWORD,
+ /* 252 122 "z" */ CWORD_CWORD_CWORD_CWORD,
+ /* 253 123 "{" */ CWORD_CWORD_CWORD_CWORD,
+ /* 254 124 "|" */ CSPCL_CWORD_CWORD_CWORD,
+ /* 255 125 "}" */ CENDVAR_CENDVAR_CWORD_CENDVAR,
+ /* 256 126 "~" */ CWORD_CCTL_CCTL_CWORD,
+ /* 257 127 */ CWORD_CWORD_CWORD_CWORD,
};
+#endif /* USE_SIT_FUNCTION */
+
+
+/* first char is indicating which tokens mark the end of a list */
+static const char *const tokname_array[] = {
+ "\1end of file",
+ "\0newline",
+ "\0redirection",
+ "\0word",
+ "\0assignment",
+ "\0;",
+ "\0&",
+ "\0&&",
+ "\0||",
+ "\0|",
+ "\0(",
+ "\1)",
+ "\1;;",
+ "\1`",
#define KWDOFFSET 14
-
-static const char *const parsekwd[] = {
- "!",
- "case",
- "do",
- "done",
- "elif",
- "else",
- "esac",
- "fi",
- "for",
- "if",
- "in",
- "then",
- "until",
- "while",
- "{",
- "}"
+ /* the following are keywords */
+ "\0!",
+ "\0case",
+ "\1do",
+ "\1done",
+ "\1elif",
+ "\1else",
+ "\1esac",
+ "\1fi",
+ "\0for",
+ "\0if",
+ "\0in",
+ "\1then",
+ "\0until",
+ "\0while",
+ "\0{",
+ "\1}",
};
+static const char *tokname(int tok)
+{
+ static char buf[16];
+
+ if(tok>=TSEMI)
+ buf[0] = '"';
+ sprintf(buf+(tok>=TSEMI), "%s%c",
+ tokname_array[tok]+1, (tok>=TSEMI ? '"' : 0));
+ return buf;
+}
static int plinno = 1; /* input line number */
@@ -1562,8 +1520,8 @@ __lookupalias(const char *name) {
#ifdef ASH_MATH_SUPPORT
/* The generated file arith.c has been replaced with a custom hand
- * written implementation written by Aaron Lehmann <aaronl@vitelus.com>.
- * This is now part of libbb, so that it can be used by all the shells
+ * written implementation written by Aaron Lehmann <aaronl@vitelus.com>.
+ * This is now part of libbb, so that it can be used by all the shells
* in busybox. */
#define ARITH_NUM 257
#define ARITH_LPAREN 258
@@ -1744,7 +1702,7 @@ static const struct builtincmd builtincmds[] = {
};
#define NUMBUILTINS (sizeof (builtincmds) / sizeof (struct builtincmd) )
-static const struct builtincmd *DOTCMD = &builtincmds[0];
+#define DOTCMD &builtincmds[0]
static struct builtincmd *BLTINCMD;
static struct builtincmd *EXECCMD;
static struct builtincmd *EVALCMD;
@@ -2165,7 +2123,7 @@ exverror(int cond, const char *msg, va_list ap)
}
-static void
+static void
error(const char *msg, ...)
{
va_list ap;
@@ -3690,7 +3648,7 @@ padvance(const char **path, const char *name)
static int
pstrcmp(const void *a, const void *b)
{
- return strcmp((const char *) a, *(const char *const *) b);
+ return strcmp((const char *) a, (*(const char *const *) b) + 1);
}
/*
@@ -3700,8 +3658,9 @@ pstrcmp(const void *a, const void *b)
static const char *const *
findkwd(const char *s)
{
- return bsearch(s, parsekwd, sizeof(parsekwd) / sizeof(const char *),
- sizeof(const char *), pstrcmp);
+ return bsearch(s, tokname_array + KWDOFFSET,
+ (sizeof(tokname_array)/sizeof(const char *)) - KWDOFFSET,
+ sizeof(const char *), pstrcmp);
}
@@ -4228,7 +4187,7 @@ delete_cmd_entry() {
-static const short nodesize[26] = {
+static const unsigned char nodesize[26] = {
ALIGN(sizeof (struct nbinary)),
ALIGN(sizeof (struct ncmd)),
ALIGN(sizeof (struct npipe)),
@@ -4412,7 +4371,7 @@ static char *exptilde (char *, int);
static void expbackq (union node *, int, int);
static int subevalvar (char *, char *, int, int, int, int, int);
static int varisset (char *, int);
-static void strtodest (const char *, const char *, int);
+static void strtodest (const char *, int, int);
static void varvalue (char *, int, int);
static void recordregion (int, int, int);
static void removerecordregions (int);
@@ -4916,7 +4875,7 @@ expbackq(cmd, quoted, flag)
struct nodelist *volatile saveargbackq;
char lastc;
int startloc = dest - stackblock();
- char const *syntax = quoted? DQSYNTAX : BASESYNTAX;
+ int syntax = quoted ? DQSYNTAX : BASESYNTAX;
volatile int saveherefd;
int quotes = flag & (EXP_FULL | EXP_CASE);
struct jmploc jmploc;
@@ -4973,7 +4932,7 @@ err1:
}
lastc = *p++;
if (lastc != '\0') {
- if (quotes && syntax[(int)lastc] == CCTL)
+ if (quotes && SIT(lastc, syntax) == CCTL)
STPUTC(CTLESC, dest);
STPUTC(lastc, dest);
}
@@ -5174,13 +5133,10 @@ varisset(name, nulok)
*/
static void
-strtodest(p, syntax, quotes)
- const char *p;
- const char *syntax;
- int quotes;
+strtodest(const char *p, int syntax, int quotes)
{
while (*p) {
- if (quotes && syntax[(int) *p] == CCTL)
+ if (quotes && SIT(*p,syntax) == CCTL)
STPUTC(CTLESC, expdest);
STPUTC(*p++, expdest);
}
@@ -5191,10 +5147,7 @@ strtodest(p, syntax, quotes)
*/
static void
-varvalue(name, quoted, flags)
- char *name;
- int quoted;
- int flags;
+varvalue(char *name, int quoted, int flags)
{
int num;
char *p;
@@ -5202,7 +5155,7 @@ varvalue(name, quoted, flags)
int sep;
int sepq = 0;
char **ap;
- char const *syntax;
+ int syntax;
int allow_split = flags & EXP_FULL;
int quotes = flags & (EXP_FULL | EXP_CASE);
@@ -5237,7 +5190,7 @@ numvar:
case '*':
sep = ifsset() ? ifsval()[0] : ' ';
if (quotes) {
- sepq = syntax[(int) sep] == CCTL;
+ sepq = SIT(sep,syntax) == CCTL;
}
param:
for (ap = shellparam.p ; (p = *ap++) != NULL ; ) {
@@ -5572,7 +5525,7 @@ expmeta(enddir, name)
break;
}
}
- } else if (*p == '!' && p[1] == '!' && (p == name || p[-1] == '/')) {
+ } else if (*p == '!' && p[1] == '!' && (p == name || p[-1] == '/')) {
metaflag = 1;
} else if (*p == '\0')
break;
@@ -7341,10 +7294,219 @@ cmdputs(const char *s)
cmdnextc = q;
}
+//#define CMDTXT_TABLE
+#ifdef CMDTXT_TABLE
+/*
+ * To collect a lot of redundant code in cmdtxt() case statements, we
+ * implement a mini language here. Each type of node struct has an
+ * associated instruction sequence that operates on its members via
+ * their offsets. The instruction are pack in unsigned chars with
+ * format IIDDDDDE where the bits are
+ * I : part of the instruction opcode, which are
+ * 00 : member is a pointer to another node -- process it recursively
+ * 40 : member is a pointer to a char string -- output it
+ * 80 : output the string whose index is stored in the data field
+ * CC : flag signaling that this case needs external processing
+ * D : data - either the (shifted) index of a fixed string to output or
+ * the actual offset of the member to operate on in the struct
+ * (since we assume bit 0 is set, the offset is not shifted)
+ * E : flag signaling end of instruction sequence
+ *
+ * WARNING: In order to handle larger offsets for 64bit archs, this code
+ * assumes that no offset can be an odd number and stores the
+ * end-of-instructions flag in bit 0.
+ */
+
+#define CMDTXT_NOMORE 0x01 /* NOTE: no offset should be odd */
+#define CMDTXT_CHARPTR 0x40
+#define CMDTXT_STRING 0x80
+#define CMDTXT_SPECIAL 0xC0
+#define CMDTXT_OFFSETMASK 0x3E
+
+static const char * const cmdtxt_strings[] = {
+ /* 0 1 2 3 4 5 6 7 */
+ "; ", "(", ")", " && ", " || ", "if ", "; then ", "...",
+ /* 8 9 10 11 12 13 */
+ "while ", "; do ", "; done", "until ", "for ", " in ...",
+ /* 14 15 16 17 */
+ "case ", "???", "() ...", "<<..."
+};
+
+static const char * const redir_strings[] = {
+ ">", "<", "<>", ">>", ">|", ">&", "<&"
+};
+
+static const unsigned char cmdtxt_ops[] = {
+#define CMDTXT_NSEMI 0
+ offsetof(union node, nbinary.ch1),
+ 0|CMDTXT_STRING,
+ offsetof(union node, nbinary.ch2)|CMDTXT_NOMORE,
+#define CMDTXT_NCMD (CMDTXT_NSEMI + 3)
+#define CMDTXT_NPIPE (CMDTXT_NCMD)
+#define CMDTXT_NCASE (CMDTXT_NCMD)
+#define CMDTXT_NTO (CMDTXT_NCMD)
+#define CMDTXT_NFROM (CMDTXT_NCMD)
+#define CMDTXT_NFROMTO (CMDTXT_NCMD)
+#define CMDTXT_NAPPEND (CMDTXT_NCMD)
+#define CMDTXT_NTOOV (CMDTXT_NCMD)
+#define CMDTXT_NTOFD (CMDTXT_NCMD)
+#define CMDTXT_NFROMFD (CMDTXT_NCMD)
+ CMDTXT_SPECIAL,
+#define CMDTXT_NREDIR (CMDTXT_NPIPE + 1)
+#define CMDTXT_NBACKGND (CMDTXT_NREDIR)
+ offsetof(union node, nredir.n)|CMDTXT_NOMORE,
+#define CMDTXT_NSUBSHELL (CMDTXT_NBACKGND + 1)
+ (1*2)|CMDTXT_STRING,
+ offsetof(union node, nredir.n),
+ (2*2)|CMDTXT_STRING|CMDTXT_NOMORE,
+#define CMDTXT_NAND (CMDTXT_NSUBSHELL + 3)
+ offsetof(union node, nbinary.ch1),
+ (3*2)|CMDTXT_STRING,
+ offsetof(union node, nbinary.ch2)|CMDTXT_NOMORE,
+#define CMDTXT_NOR (CMDTXT_NAND + 3)
+ offsetof(union node, nbinary.ch1),
+ (4*2)|CMDTXT_STRING,
+ offsetof(union node, nbinary.ch2)|CMDTXT_NOMORE,
+#define CMDTXT_NIF (CMDTXT_NOR + 3)
+ (5*2)|CMDTXT_STRING,
+ offsetof(union node, nif.test),
+ (6*2)|CMDTXT_STRING,
+ offsetof(union node, nif.ifpart),
+ (7*2)|CMDTXT_STRING|CMDTXT_NOMORE,
+#define CMDTXT_NWHILE (CMDTXT_NIF + 5)
+ (8*2)|CMDTXT_STRING,
+ offsetof(union node, nbinary.ch1),
+ (9*2)|CMDTXT_STRING,
+ offsetof(union node, nbinary.ch2),
+ (10*2)|CMDTXT_STRING|CMDTXT_NOMORE,
+#define CMDTXT_NUNTIL (CMDTXT_NWHILE + 5)
+ (11*2)|CMDTXT_STRING,
+ offsetof(union node, nbinary.ch1),
+ (9*2)|CMDTXT_STRING,
+ offsetof(union node, nbinary.ch2),
+ (10*2)|CMDTXT_STRING|CMDTXT_NOMORE,
+#define CMDTXT_NFOR (CMDTXT_NUNTIL + 5)
+ (12*2)|CMDTXT_STRING,
+ offsetof(union node, nfor.var)|CMDTXT_CHARPTR,
+ (13*2)|CMDTXT_STRING|CMDTXT_NOMORE,
+#define CMDTXT_NCLIST (CMDTXT_NFOR + 3) /* TODO: IS THIS CORRECT??? */
+#define CMDTXT_NNOT (CMDTXT_NCLIST) /* TODO: IS THIS CORRECT??? */
+ (15*2)|CMDTXT_STRING|CMDTXT_NOMORE,
+#define CMDTXT_NDEFUN (CMDTXT_NCLIST + 1)
+ offsetof(union node, narg.text)|CMDTXT_CHARPTR,
+ (16*2)|CMDTXT_STRING|CMDTXT_NOMORE,
+#define CMDTXT_NARG (CMDTXT_NDEFUN + 2)
+ offsetof(union node, narg.text)|CMDTXT_CHARPTR|CMDTXT_NOMORE,
+#define CMDTXT_NHERE (CMDTXT_NARG + 1)
+#define CMDTXT_NXHERE (CMDTXT_NHERE)
+ (17*2)|CMDTXT_STRING|CMDTXT_NOMORE,
+};
+
+#if CMDTXT_NXHERE != 36
+#error CMDTXT_NXHERE
+#endif
+
+static const unsigned char cmdtxt_ops_index[26] = {
+ CMDTXT_NSEMI,
+ CMDTXT_NCMD,
+ CMDTXT_NPIPE,
+ CMDTXT_NREDIR,
+ CMDTXT_NBACKGND,
+ CMDTXT_NSUBSHELL,
+ CMDTXT_NAND,
+ CMDTXT_NOR,
+ CMDTXT_NIF,
+ CMDTXT_NWHILE,
+ CMDTXT_NUNTIL,
+ CMDTXT_NFOR,
+ CMDTXT_NCASE,
+ CMDTXT_NCLIST,
+ CMDTXT_NDEFUN,
+ CMDTXT_NARG,
+ CMDTXT_NTO,
+ CMDTXT_NFROM,
+ CMDTXT_NFROMTO,
+ CMDTXT_NAPPEND,
+ CMDTXT_NTOOV,
+ CMDTXT_NTOFD,
+ CMDTXT_NFROMFD,
+ CMDTXT_NHERE,
+ CMDTXT_NXHERE,
+ CMDTXT_NNOT,
+};
static void
cmdtxt(const union node *n)
{
+ const char *p;
+
+ if (n == NULL)
+ return;
+
+ p = cmdtxt_ops + (int) cmdtxt_ops_index[n->type];
+ if ((*p & CMDTXT_SPECIAL) != CMDTXT_SPECIAL) { /* normal case */
+ do {
+ if (*p & CMDTXT_STRING) { /* output fixed string */
+ cmdputs(cmdtxt_strings[((int)(*p & CMDTXT_OFFSETMASK) >> 1)]);
+ } else if (*p & CMDTXT_CHARPTR) { /* output dynamic string */
+ cmdputs(((const char *) n) + ((int)(*p & CMDTXT_OFFSETMASK)));
+ } else { /* output field */
+ cmdtxt((const union node *)
+ (((const char *) n) + ((int)(*p & CMDTXT_OFFSETMASK))));
+ }
+ } while (!(*p++ & CMDTXT_NOMORE));
+ } else if (n->type == NCMD) {
+ union node *np;
+ for (np = n->ncmd.args ; np ; np = np->narg.next) {
+ cmdtxt(np);
+ if (np->narg.next)
+ cmdputs(spcstr);
+ }
+ for (np = n->ncmd.redirect ; np ; np = np->nfile.next) {
+ cmdputs(spcstr);
+ cmdtxt(np);
+ }
+ } else if (n->type == NPIPE) {
+ struct nodelist *lp;
+ for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
+ cmdtxt(lp->n);
+ if (lp->next)
+ cmdputs(" | ");
+ }
+ } else if (n->type == NCASE) {
+ cmdputs(cmdtxt_strings[14]);
+ cmdputs(n->ncase.expr->narg.text);
+ cmdputs(cmdtxt_strings[13]);
+ } else {
+#if (NTO != 16) || (NFROM != 17) || (NFROMTO != 18) || (NAPPEND != 19) || (NTOOV != 20) || (NTOFD != 21) || (NFROMFD != 22)
+#error Assumption violated regarding range and ordering of NTO ... NFROMFD!
+#endif
+ char s[2];
+
+#ifdef DEBUG
+ assert((n->type >= NTO) && (n->type <= NFROMFD));
+#endif
+
+ p = redir_strings[n->type - NTO];
+ if (n->nfile.fd != ('>' == *p)) {
+ s[0] = n->nfile.fd + '0';
+ s[1] = '\0';
+ cmdputs(s);
+ }
+ cmdputs(p);
+ if (n->type >= NTOFD) {
+ s[0] = n->ndup.dupfd + '0';
+ s[1] = '\0';
+ cmdputs(s);
+ } else {
+ cmdtxt(n->nfile.fname);
+ }
+ }
+}
+#else /* CMDTXT_TABLE */
+static void
+cmdtxt(const union node *n)
+{
union node *np;
struct nodelist *lp;
const char *p;
@@ -7469,7 +7631,7 @@ redir:
break;
}
}
-
+#endif
static char *
commandtext(const union node *n)
@@ -7602,27 +7764,17 @@ ash_main(argc, argv)
* exception EXSHELLPROC to clean up before executing
* the shell procedure.
*/
- switch (exception) {
- case EXSHELLPROC:
+ if (exception == EXSHELLPROC) {
rootpid = getpid();
rootshell = 1;
minusc = NULL;
state = 3;
- break;
-
- case EXEXEC:
- exitstatus = exerrno;
- break;
-
- case EXERROR:
- exitstatus = 2;
- break;
-
- default:
- break;
- }
-
- if (exception != EXSHELLPROC) {
+ } else {
+ if (exception == EXEXEC) {
+ exitstatus = exerrno;
+ } else if (exception == EXERROR) {
+ exitstatus = 2;
+ }
if (state == 0 || iflag == 0 || ! rootshell)
exitshell(exitstatus);
}
@@ -7673,14 +7825,14 @@ state2:
state3:
state = 4;
if (sflag == 0 || minusc) {
- static int sigs[] = {
+ static const char sigs[] = {
SIGINT, SIGQUIT, SIGHUP,
#ifdef SIGTSTP
SIGTSTP,
#endif
SIGPIPE
};
-#define SIGSSIZE (sizeof(sigs)/sizeof(sigs[0]))
+#define SIGSSIZE ((sizeof(sigs)/sizeof(sigs[0])) - 1) /* trailing nul */
int i;
for (i = 0; i < SIGSSIZE; i++)
@@ -7764,8 +7916,8 @@ read_profile(name)
const char *name;
{
int fd;
- int xflag_set = 0;
- int vflag_set = 0;
+ int xflag_save;
+ int vflag_save;
INTOFF;
if ((fd = open(name, O_RDONLY)) >= 0)
@@ -7774,19 +7926,15 @@ read_profile(name)
if (fd < 0)
return;
/* -q turns off -x and -v just when executing init files */
+ /* Note: Might do a little redundant work, but reduces code size. */
+ xflag_save = xflag;
+ vflag_save = vflag;
if (qflag) {
- if (xflag)
- xflag = 0, xflag_set = 1;
- if (vflag)
- vflag = 0, vflag_set = 1;
+ vflag = xflag = 0;
}
cmdloop(0);
- if (qflag) {
- if (xflag_set)
- xflag = 1;
- if (vflag_set)
- vflag = 1;
- }
+ xflag = xflag_save;
+ vflag = vflag_save;
popfile();
}
@@ -8089,11 +8237,6 @@ ungrabstackstr(char *s, char *p)
#undef rflag
-//#ifdef __GLIBC__
-static mode_t getmode(const void *, mode_t);
-static void *setmode(const char *);
-//#endif
-
#if !defined(__GLIBC__) || __GLIBC__ == 2 && __GLIBC_MINOR__ < 1
typedef long rlim_t;
#endif
@@ -8108,9 +8251,7 @@ typedef long rlim_t;
*/
static int
-readcmd(argc, argv)
- int argc;
- char **argv;
+readcmd(int argc, char **argv)
{
char **ap;
int backslash;
@@ -8132,7 +8273,7 @@ readcmd(argc, argv)
rflag = 1;
}
if (prompt && isatty(0)) {
- putprompt(prompt);
+ out2str(prompt); /* read without cmdedit */
flushall();
}
if (*(ap = argptr) == NULL)
@@ -8199,8 +8340,16 @@ umaskcmd(argc, argv)
int argc;
char **argv;
{
+ static const char permuser[3] = "ugo";
+ static const char permmode[3] = "rwx";
+ static const short int permmask[] = {
+ S_IRUSR, S_IWUSR, S_IXUSR,
+ S_IRGRP, S_IWGRP, S_IXGRP,
+ S_IROTH, S_IWOTH, S_IXOTH
+ };
+
char *ap;
- int mask;
+ mode_t mask;
int i;
int symbolic_mode = 0;
@@ -8215,36 +8364,21 @@ umaskcmd(argc, argv)
if ((ap = *argptr) == NULL) {
if (symbolic_mode) {
- char u[4], g[4], o[4];
-
- i = 0;
- if ((mask & S_IRUSR) == 0)
- u[i++] = 'r';
- if ((mask & S_IWUSR) == 0)
- u[i++] = 'w';
- if ((mask & S_IXUSR) == 0)
- u[i++] = 'x';
- u[i] = '\0';
-
- i = 0;
- if ((mask & S_IRGRP) == 0)
- g[i++] = 'r';
- if ((mask & S_IWGRP) == 0)
- g[i++] = 'w';
- if ((mask & S_IXGRP) == 0)
- g[i++] = 'x';
- g[i] = '\0';
-
- i = 0;
- if ((mask & S_IROTH) == 0)
- o[i++] = 'r';
- if ((mask & S_IWOTH) == 0)
- o[i++] = 'w';
- if ((mask & S_IXOTH) == 0)
- o[i++] = 'x';
- o[i] = '\0';
-
- printf("u=%s,g=%s,o=%s\n", u, g, o);
+ char buf[18];
+ char *p = buf;
+ for (i=0 ; i<3 ; i++) {
+ int j;
+ *p++ = permuser[i];
+ *p++ = '=';
+ for (j=0 ; j<3 ; j++) {
+ if ((mask & permmask[3*i+j]) == 0) {
+ *p++ = permmode[j];
+ }
+ }
+ *p++ = ',';
+ }
+ *--p = 0;
+ puts(buf);
} else {
printf("%.4o\n", mask);
}
@@ -8258,17 +8392,10 @@ umaskcmd(argc, argv)
} while (*++ap != '\0');
umask(mask);
} else {
- void *set;
-
- INTOFF;
- if ((set = setmode(ap)) != 0) {
- mask = getmode(set, ~mask & 0777);
- ckfree(set);
- }
- INTON;
- if (!set)
+ mask = ~mask & 0777;
+ if (parse_mode(ap, &mask) == FALSE) {
error("Illegal mode: %s", ap);
-
+ }
umask(~mask & 0777);
}
}
@@ -8287,46 +8414,45 @@ umaskcmd(argc, argv)
struct limits {
const char *name;
- int cmd;
- int factor; /* multiply by to get rlim_{cur,max} values */
- char option;
+ short cmd;
+ short factor; /* multiply by to get rlim_{cur,max} values */
};
static const struct limits limits[] = {
#ifdef RLIMIT_CPU
- { "time(seconds)", RLIMIT_CPU, 1, 't' },
+ { "time(seconds)", RLIMIT_CPU, 1 },
#endif
#ifdef RLIMIT_FSIZE
- { "file(blocks)", RLIMIT_FSIZE, 512, 'f' },
+ { "file(blocks)", RLIMIT_FSIZE, 512 },
#endif
#ifdef RLIMIT_DATA
- { "data(kbytes)", RLIMIT_DATA, 1024, 'd' },
+ { "data(kbytes)", RLIMIT_DATA, 1024 },
#endif
#ifdef RLIMIT_STACK
- { "stack(kbytes)", RLIMIT_STACK, 1024, 's' },
+ { "stack(kbytes)", RLIMIT_STACK, 1024 },
#endif
#ifdef RLIMIT_CORE
- { "coredump(blocks)", RLIMIT_CORE, 512, 'c' },
+ { "coredump(blocks)", RLIMIT_CORE, 512 },
#endif
#ifdef RLIMIT_RSS
- { "memory(kbytes)", RLIMIT_RSS, 1024, 'm' },
+ { "memory(kbytes)", RLIMIT_RSS, 1024 },
#endif
#ifdef RLIMIT_MEMLOCK
- { "locked memory(kbytes)", RLIMIT_MEMLOCK, 1024, 'l' },
+ { "locked memory(kbytes)", RLIMIT_MEMLOCK, 1024 },
#endif
#ifdef RLIMIT_NPROC
- { "process(processes)", RLIMIT_NPROC, 1, 'p' },
+ { "process(processes)", RLIMIT_NPROC, 1 },
#endif
#ifdef RLIMIT_NOFILE
- { "nofiles(descriptors)", RLIMIT_NOFILE, 1, 'n' },
+ { "nofiles(descriptors)", RLIMIT_NOFILE, 1 },
#endif
#ifdef RLIMIT_VMEM
- { "vmemory(kbytes)", RLIMIT_VMEM, 1024, 'v' },
+ { "vmemory(kbytes)", RLIMIT_VMEM, 1024 },
#endif
#ifdef RLIMIT_SWAP
- { "swap(kbytes)", RLIMIT_SWAP, 1024, 'w' },
+ { "swap(kbytes)", RLIMIT_SWAP, 1024 },
#endif
- { (char *) 0, 0, 0, '\0' }
+ { NULL, 0, 0 }
};
static int
@@ -8334,6 +8460,7 @@ ulimitcmd(argc, argv)
int argc;
char **argv;
{
+ static const char unlimited_string[] = "unlimited";
int c;
rlim_t val = 0;
enum { SOFT = 0x1, HARD = 0x2 }
@@ -8344,25 +8471,59 @@ ulimitcmd(argc, argv)
struct rlimit limit;
what = 'f';
- while ((optc = nextopt("HSatfdsmcnpl")) != '\0')
- switch (optc) {
- case 'H':
+
+ while ((optc = nextopt("HSa"
+#ifdef RLIMIT_CPU
+ "t"
+#endif
+#ifdef RLIMIT_FSIZE
+ "f"
+#endif
+#ifdef RLIMIT_DATA
+ "d"
+#endif
+#ifdef RLIMIT_STACK
+ "s"
+#endif
+#ifdef RLIMIT_CORE
+ "c"
+#endif
+#ifdef RLIMIT_RSS
+ "m"
+#endif
+#ifdef RLIMIT_MEMLOCK
+ "l"
+#endif
+#ifdef RLIMIT_NPROC
+ "p"
+#endif
+#ifdef RLIMIT_NOFILE
+ "n"
+#endif
+#ifdef RLIMIT_VMEM
+ "v"
+#endif
+#ifdef RLIMIT_SWAP
+ "w"
+#endif
+ )) != '\0') {
+ if (optc == 'H') {
how = HARD;
- break;
- case 'S':
+ } else if (optc == 'S') {
how = SOFT;
- break;
- case 'a':
+ } else if (optc == 'a') {
all = 1;
- break;
- default:
+ } else {
what = optc;
}
+ }
- for (l = limits; l->name && l->option != what; l++)
- ;
- if (!l->name)
- error("internal error (%c)", what);
+ for (l = limits; l->name; l++) {
+ if(l->name[0] == what)
+ break;
+ if(l->name[1]=='w' && what=='w')
+ break;
+ }
set = *argptr ? 1 : 0;
if (set) {
@@ -8370,7 +8531,7 @@ ulimitcmd(argc, argv)
if (all || argptr[1])
error("too many arguments");
- if (strcmp(p, "unlimited") == 0)
+ if (strcmp(p, unlimited_string) == 0)
val = RLIM_INFINITY;
else {
val = (rlim_t) 0;
@@ -8386,48 +8547,42 @@ ulimitcmd(argc, argv)
val *= l->factor;
}
}
+
if (all) {
for (l = limits; l->name; l++) {
+ printf("%-20s ", l->name);
getrlimit(l->cmd, &limit);
+ OUTPUT_LIMIT:
if (how & SOFT)
val = limit.rlim_cur;
else if (how & HARD)
val = limit.rlim_max;
- printf("%-20s ", l->name);
if (val == RLIM_INFINITY)
- printf("unlimited\n");
+ puts(unlimited_string);
else
{
val /= l->factor;
printf("%lld\n", (long long) val);
}
+ if (!all) {
+ break;
+ }
}
return 0;
}
- getrlimit(l->cmd, &limit);
- if (set) {
- if (how & HARD)
- limit.rlim_max = val;
- if (how & SOFT)
- limit.rlim_cur = val;
- if (setrlimit(l->cmd, &limit) < 0)
- error("error setting limit (%m)");
- } else {
- if (how & SOFT)
- val = limit.rlim_cur;
- else if (how & HARD)
- val = limit.rlim_max;
-
- if (val == RLIM_INFINITY)
- printf("unlimited\n");
- else
- {
- val /= l->factor;
- printf("%lld\n", (long long) val);
- }
+ if (!set) {
+ goto OUTPUT_LIMIT;
}
+
+ getrlimit(l->cmd, &limit);
+ if (how & HARD)
+ limit.rlim_max = val;
+ if (how & SOFT)
+ limit.rlim_cur = val;
+ if (setrlimit(l->cmd, &limit) < 0)
+ error("error setting limit (%m)");
return 0;
}
/*
@@ -8499,16 +8654,7 @@ single_quote(const char *s) {
len2 = strspn(s + len1, "'");
len1p = len1 ? len1 + 2 : len1;
- switch (len2) {
- case 0:
- len2p = 0;
- break;
- case 1:
- len2p = 2;
- break;
- default:
- len2p = len2 + 2;
- }
+ len2p = len2 + ((len2 < 2) ? len2 : 2);
CHECKSTRSPACE(len1p + len2p + 1, p);
@@ -8520,20 +8666,16 @@ single_quote(const char *s) {
s += len1;
}
- switch (len2) {
- case 0:
- break;
- case 1:
- *q++ = '\\';
- *q = '\'';
- s++;
- break;
- default:
+ if (len2 > 1) {
*q = '"';
q += 1 + len2;
memcpy(q + 1, s, len2);
*q = '"';
s += len2;
+ } else if (len2 == 1) {
+ *q++ = '\\';
+ *q = '\'';
+ s++;
}
STADJUST(len1p + len2p, p);
@@ -8565,182 +8707,357 @@ static void sizenodelist (const struct nodelist *);
static struct nodelist *copynodelist (const struct nodelist *);
static char *nodesavestr (const char *);
-static void
-calcsize(const union node *n)
+//#define CALCSIZE_TABLE
+//#define COPYNODE_TABLE
+#if defined(CALCSIZE_TABLE) || defined(COPYNODE_TABLE)
+/*
+ * To collect a lot of redundant code in case statements for copynode()
+ * and calcsize(), we implement a mini language here. Each type of node
+ * struct has an associated instruction sequence that operates on its
+ * members via their offsets. The instruction are pack in unsigned chars
+ * with format IIDDDDDE where the bits are
+ * I : part of the instruction opcode, which are
+ * 00 : member is a pointer to another node
+ * 40 : member is an integer
+ * 80 : member is a pointer to a nodelist
+ * CC : member is a pointer to a char string
+ * D : data - the actual offset of the member to operate on in the struct
+ * (since we assume bit 0 is set, it is not shifted)
+ * E : flag signaling end of instruction sequence
+ *
+ * WARNING: In order to handle larger offsets for 64bit archs, this code
+ * assumes that no offset can be an odd number and stores the
+ * end-of-instructions flag in bit 0.
+ */
+
+#define NODE_INTEGER 0x40
+#define NODE_NODELIST 0x80
+#define NODE_CHARPTR 0xC0
+#define NODE_NOMORE 0x01 /* Note: no offset should be odd (aligned)*/
+#define NODE_MBRMASK 0xC0
+#define NODE_OFFSETMASK 0x3E
+
+static const unsigned char copynode_ops[35] = {
+#define COPYNODE_OPS0 0
+ offsetof(union node, nbinary.ch2),
+ offsetof(union node, nbinary.ch1)|NODE_NOMORE,
+#define COPYNODE_OPS1 (COPYNODE_OPS0 + 2)
+ offsetof(union node, ncmd.redirect),
+ offsetof(union node, ncmd.args),
+ offsetof(union node, ncmd.assign),
+ offsetof(union node, ncmd.backgnd)|NODE_INTEGER|NODE_NOMORE,
+#define COPYNODE_OPS2 (COPYNODE_OPS1 + 4)
+ offsetof(union node, npipe.cmdlist)|NODE_NODELIST,
+ offsetof(union node, npipe.backgnd)|NODE_INTEGER|NODE_NOMORE,
+#define COPYNODE_OPS3 (COPYNODE_OPS2 + 2)
+ offsetof(union node, nredir.redirect),
+ offsetof(union node, nredir.n)|NODE_NOMORE,
+#define COPYNODE_OPS4 (COPYNODE_OPS3 + 2)
+ offsetof(union node, nif.elsepart),
+ offsetof(union node, nif.ifpart),
+ offsetof(union node, nif.test)|NODE_NOMORE,
+#define COPYNODE_OPS5 (COPYNODE_OPS4 + 3)
+ offsetof(union node, nfor.var)|NODE_CHARPTR,
+ offsetof(union node, nfor.body),
+ offsetof(union node, nfor.args)|NODE_NOMORE,
+#define COPYNODE_OPS6 (COPYNODE_OPS5 + 3)
+ offsetof(union node, ncase.cases),
+ offsetof(union node, ncase.expr)|NODE_NOMORE,
+#define COPYNODE_OPS7 (COPYNODE_OPS6 + 2)
+ offsetof(union node, nclist.body),
+ offsetof(union node, nclist.pattern),
+ offsetof(union node, nclist.next)|NODE_NOMORE,
+#define COPYNODE_OPS8 (COPYNODE_OPS7 + 3)
+ offsetof(union node, narg.backquote)|NODE_NODELIST,
+ offsetof(union node, narg.text)|NODE_CHARPTR,
+ offsetof(union node, narg.next)|NODE_NOMORE,
+#define COPYNODE_OPS9 (COPYNODE_OPS8 + 3)
+ offsetof(union node, nfile.fname),
+ offsetof(union node, nfile.fd)|NODE_INTEGER,
+ offsetof(union node, nfile.next)|NODE_NOMORE,
+#define COPYNODE_OPS10 (COPYNODE_OPS9 + 3)
+ offsetof(union node, ndup.vname),
+ offsetof(union node, ndup.dupfd)|NODE_INTEGER,
+ offsetof(union node, ndup.fd)|NODE_INTEGER,
+ offsetof(union node, ndup.next)|NODE_NOMORE,
+#define COPYNODE_OPS11 (COPYNODE_OPS10 + 4)
+ offsetof(union node, nhere.doc),
+ offsetof(union node, nhere.fd)|NODE_INTEGER,
+ offsetof(union node, nhere.next)|NODE_NOMORE,
+#define COPYNODE_OPS12 (COPYNODE_OPS11 + 3)
+ offsetof(union node, nnot.com)|NODE_NOMORE,
+};
+
+#if COPYNODE_OPS12 != 34
+#error COPYNODE_OPS12 is incorrect
+#endif
+
+static const unsigned char copynode_ops_index[26] = {
+ COPYNODE_OPS0, /* NSEMI */
+ COPYNODE_OPS1, /* NCMD */
+ COPYNODE_OPS2, /* NPIPE */
+ COPYNODE_OPS3, /* NREDIR */
+ COPYNODE_OPS3, /* NBACKGND */
+ COPYNODE_OPS3, /* NSUBSHELL */
+ COPYNODE_OPS0, /* NAND */
+ COPYNODE_OPS0, /* NOR */
+ COPYNODE_OPS4, /* NIF */
+ COPYNODE_OPS0, /* NWHILE */
+ COPYNODE_OPS0, /* NUNTIL */
+ COPYNODE_OPS5, /* NFOR */
+ COPYNODE_OPS6, /* NCASE */
+ COPYNODE_OPS7, /* NCLIST */
+ COPYNODE_OPS8, /* NDEFUN */
+ COPYNODE_OPS8, /* NARG */
+ COPYNODE_OPS9, /* NTO */
+ COPYNODE_OPS9, /* NFROM */
+ COPYNODE_OPS9, /* NFROMTO */
+ COPYNODE_OPS9, /* NAPPEND */
+ COPYNODE_OPS9, /* NTOOV */
+ COPYNODE_OPS10, /* NTOFD */
+ COPYNODE_OPS10, /* NFROMFD */
+ COPYNODE_OPS11, /* NHERE */
+ COPYNODE_OPS11, /* NXHERE */
+ COPYNODE_OPS12, /* NNOT */
+};
+
+#if NODE_CHARPTR != NODE_MBRMASK
+#error NODE_CHARPTR != NODE_MBRMASK!!!
+#endif
+#endif /* defined(CALCSIZE_TABLE) || defined(COPYNODE_TABLE) */
+
+#ifdef COPYNODE_TABLE
+static union node *
+copynode(const union node *n)
{
+ union node *new;
+ const unsigned char *p;
+
if (n == NULL)
- return;
- funcblocksize += nodesize[n->type];
+ return NULL;
+ new = funcblock;
+ new->type = n->type;
+ funcblock = (char *) funcblock + (int) nodesize[n->type];
+ p = copynode_ops + (int) copynode_ops_index[n->type];
+ do {
+ char *nn = ((char *) new) + ((int)(*p & NODE_OFFSETMASK));
+ const char *no = ((const char *) n) + ((int)(*p & NODE_OFFSETMASK));
+
+ if (!(*p & NODE_MBRMASK)) { /* standard node */
+ (union node *) nn = copynode((const union node *) no);
+ } else if ((*p & NODE_MBRMASK) == NODE_CHARPTR) { /* string */
+ nn = nodesavestr(no);
+ } else if (*p & NODE_NODELIST) { /* nodelist */
+ (struct nodelist *) nn
+ = copynodelist((const struct nodelist *) no);
+ } else { /* integer */
+ *((int *) nn) = *((int *) no);
+ }
+ } while (!(*p++ & NODE_NOMORE));
+ return new;
+}
+#else /* COPYNODE_TABLE */
+static union node *
+copynode(const union node *n)
+{
+ union node *new;
+
+ if (n == NULL)
+ return NULL;
+ new = funcblock;
+ funcblock = (char *) funcblock + nodesize[n->type];
switch (n->type) {
case NSEMI:
case NAND:
case NOR:
case NWHILE:
case NUNTIL:
- calcsize(n->nbinary.ch2);
- calcsize(n->nbinary.ch1);
+ new->nbinary.ch2 = copynode(n->nbinary.ch2);
+ new->nbinary.ch1 = copynode(n->nbinary.ch1);
break;
case NCMD:
- calcsize(n->ncmd.redirect);
- calcsize(n->ncmd.args);
- calcsize(n->ncmd.assign);
+ new->ncmd.redirect = copynode(n->ncmd.redirect);
+ new->ncmd.args = copynode(n->ncmd.args);
+ new->ncmd.assign = copynode(n->ncmd.assign);
+ new->ncmd.backgnd = n->ncmd.backgnd;
break;
case NPIPE:
- sizenodelist(n->npipe.cmdlist);
+ new->npipe.cmdlist = copynodelist(n->npipe.cmdlist);
+ new->npipe.backgnd = n->npipe.backgnd;
break;
case NREDIR:
case NBACKGND:
case NSUBSHELL:
- calcsize(n->nredir.redirect);
- calcsize(n->nredir.n);
+ new->nredir.redirect = copynode(n->nredir.redirect);
+ new->nredir.n = copynode(n->nredir.n);
break;
case NIF:
- calcsize(n->nif.elsepart);
- calcsize(n->nif.ifpart);
- calcsize(n->nif.test);
+ new->nif.elsepart = copynode(n->nif.elsepart);
+ new->nif.ifpart = copynode(n->nif.ifpart);
+ new->nif.test = copynode(n->nif.test);
break;
case NFOR:
- funcstringsize += strlen(n->nfor.var) + 1;
- calcsize(n->nfor.body);
- calcsize(n->nfor.args);
+ new->nfor.var = nodesavestr(n->nfor.var);
+ new->nfor.body = copynode(n->nfor.body);
+ new->nfor.args = copynode(n->nfor.args);
break;
case NCASE:
- calcsize(n->ncase.cases);
- calcsize(n->ncase.expr);
+ new->ncase.cases = copynode(n->ncase.cases);
+ new->ncase.expr = copynode(n->ncase.expr);
break;
case NCLIST:
- calcsize(n->nclist.body);
- calcsize(n->nclist.pattern);
- calcsize(n->nclist.next);
+ new->nclist.body = copynode(n->nclist.body);
+ new->nclist.pattern = copynode(n->nclist.pattern);
+ new->nclist.next = copynode(n->nclist.next);
break;
case NDEFUN:
case NARG:
- sizenodelist(n->narg.backquote);
- funcstringsize += strlen(n->narg.text) + 1;
- calcsize(n->narg.next);
+ new->narg.backquote = copynodelist(n->narg.backquote);
+ new->narg.text = nodesavestr(n->narg.text);
+ new->narg.next = copynode(n->narg.next);
break;
case NTO:
case NFROM:
case NFROMTO:
case NAPPEND:
case NTOOV:
- calcsize(n->nfile.fname);
- calcsize(n->nfile.next);
+ new->nfile.fname = copynode(n->nfile.fname);
+ new->nfile.fd = n->nfile.fd;
+ new->nfile.next = copynode(n->nfile.next);
break;
case NTOFD:
case NFROMFD:
- calcsize(n->ndup.vname);
- calcsize(n->ndup.next);
+ new->ndup.vname = copynode(n->ndup.vname);
+ new->ndup.dupfd = n->ndup.dupfd;
+ new->ndup.fd = n->ndup.fd;
+ new->ndup.next = copynode(n->ndup.next);
break;
case NHERE:
case NXHERE:
- calcsize(n->nhere.doc);
- calcsize(n->nhere.next);
+ new->nhere.doc = copynode(n->nhere.doc);
+ new->nhere.fd = n->nhere.fd;
+ new->nhere.next = copynode(n->nhere.next);
break;
case NNOT:
- calcsize(n->nnot.com);
+ new->nnot.com = copynode(n->nnot.com);
break;
};
+ new->type = n->type;
+ return new;
}
+#endif /* COPYNODE_TABLE */
+#ifdef CALCSIZE_TABLE
static void
-sizenodelist(const struct nodelist *lp)
+calcsize(const union node *n)
{
- while (lp) {
- funcblocksize += ALIGN(sizeof(struct nodelist));
- calcsize(lp->n);
- lp = lp->next;
- }
-}
-
+ const unsigned char *p;
-static union node *
-copynode(const union node *n)
+ if (n == NULL)
+ return;
+ funcblocksize += (int) nodesize[n->type];
+
+ p = copynode_ops + (int) copynode_ops_index[n->type];
+ do {
+ const char *no = ((const char *) n) + ((int)(*p & NODE_OFFSETMASK));
+
+ if (!(*p & NODE_MBRMASK)) { /* standard node */
+ calcsize((const union node *) no);
+ } else if ((*p & NODE_MBRMASK) == NODE_CHARPTR) { /* string */
+ funcstringsize += strlen(no) + 1;
+ } else if (*p & NODE_NODELIST) { /* nodelist */
+ sizenodelist((const struct nodelist *) no);
+ }
+ } while (!(*p++ & NODE_NOMORE));
+}
+#else /* CALCSIZE_TABLE */
+static void
+calcsize(const union node *n)
{
- union node *new;
-
if (n == NULL)
- return NULL;
- new = funcblock;
- funcblock = (char *) funcblock + nodesize[n->type];
+ return;
+ funcblocksize += nodesize[n->type];
switch (n->type) {
case NSEMI:
case NAND:
case NOR:
case NWHILE:
case NUNTIL:
- new->nbinary.ch2 = copynode(n->nbinary.ch2);
- new->nbinary.ch1 = copynode(n->nbinary.ch1);
+ calcsize(n->nbinary.ch2);
+ calcsize(n->nbinary.ch1);
break;
case NCMD:
- new->ncmd.redirect = copynode(n->ncmd.redirect);
- new->ncmd.args = copynode(n->ncmd.args);
- new->ncmd.assign = copynode(n->ncmd.assign);
- new->ncmd.backgnd = n->ncmd.backgnd;
+ calcsize(n->ncmd.redirect);
+ calcsize(n->ncmd.args);
+ calcsize(n->ncmd.assign);
break;
case NPIPE:
- new->npipe.cmdlist = copynodelist(n->npipe.cmdlist);
- new->npipe.backgnd = n->npipe.backgnd;
+ sizenodelist(n->npipe.cmdlist);
break;
case NREDIR:
case NBACKGND:
case NSUBSHELL:
- new->nredir.redirect = copynode(n->nredir.redirect);
- new->nredir.n = copynode(n->nredir.n);
+ calcsize(n->nredir.redirect);
+ calcsize(n->nredir.n);
break;
case NIF:
- new->nif.elsepart = copynode(n->nif.elsepart);
- new->nif.ifpart = copynode(n->nif.ifpart);
- new->nif.test = copynode(n->nif.test);
+ calcsize(n->nif.elsepart);
+ calcsize(n->nif.ifpart);
+ calcsize(n->nif.test);
break;
case NFOR:
- new->nfor.var = nodesavestr(n->nfor.var);
- new->nfor.body = copynode(n->nfor.body);
- new->nfor.args = copynode(n->nfor.args);
+ funcstringsize += strlen(n->nfor.var) + 1;
+ calcsize(n->nfor.body);
+ calcsize(n->nfor.args);
break;
case NCASE:
- new->ncase.cases = copynode(n->ncase.cases);
- new->ncase.expr = copynode(n->ncase.expr);
+ calcsize(n->ncase.cases);
+ calcsize(n->ncase.expr);
break;
case NCLIST:
- new->nclist.body = copynode(n->nclist.body);
- new->nclist.pattern = copynode(n->nclist.pattern);
- new->nclist.next = copynode(n->nclist.next);
+ calcsize(n->nclist.body);
+ calcsize(n->nclist.pattern);
+ calcsize(n->nclist.next);
break;
case NDEFUN:
case NARG:
- new->narg.backquote = copynodelist(n->narg.backquote);
- new->narg.text = nodesavestr(n->narg.text);
- new->narg.next = copynode(n->narg.next);
+ sizenodelist(n->narg.backquote);
+ funcstringsize += strlen(n->narg.text) + 1;
+ calcsize(n->narg.next);
break;
case NTO:
case NFROM:
case NFROMTO:
case NAPPEND:
case NTOOV:
- new->nfile.fname = copynode(n->nfile.fname);
- new->nfile.fd = n->nfile.fd;
- new->nfile.next = copynode(n->nfile.next);
+ calcsize(n->nfile.fname);
+ calcsize(n->nfile.next);
break;
case NTOFD:
case NFROMFD:
- new->ndup.vname = copynode(n->ndup.vname);
- new->ndup.dupfd = n->ndup.dupfd;
- new->ndup.fd = n->ndup.fd;
- new->ndup.next = copynode(n->ndup.next);
+ calcsize(n->ndup.vname);
+ calcsize(n->ndup.next);
break;
case NHERE:
case NXHERE:
- new->nhere.doc = copynode(n->nhere.doc);
- new->nhere.fd = n->nhere.fd;
- new->nhere.next = copynode(n->nhere.next);
+ calcsize(n->nhere.doc);
+ calcsize(n->nhere.next);
break;
case NNOT:
- new->nnot.com = copynode(n->nnot.com);
+ calcsize(n->nnot.com);
break;
};
- new->type = n->type;
- return new;
+}
+#endif /* CALCSIZE_TABLE */
+
+static void
+sizenodelist(const struct nodelist *lp)
+{
+ while (lp) {
+ funcblocksize += ALIGN(sizeof(struct nodelist));
+ calcsize(lp->n);
+ lp = lp->next;
+ }
}
@@ -9346,10 +9663,10 @@ static union node *command (void);
static union node *simplecmd (void);
static void parsefname (void);
static void parseheredoc (void);
-static int peektoken (void);
+static char peektoken (void);
static int readtoken (void);
static int xxreadtoken (void);
-static int readtoken1 (int, char const *, char *, int);
+static int readtoken1 (int, int, const char *, int);
static int noexpand (char *);
static void synexpect (int) __attribute__((noreturn));
static void synerror (const char *) __attribute__((noreturn));
@@ -9391,7 +9708,7 @@ list(nlflag)
int tok;
checkkwd = 2;
- if (nlflag == 0 && tokendlist[peektoken()])
+ if (nlflag == 0 && peektoken())
return NULL;
n1 = NULL;
for (;;) {
@@ -9434,7 +9751,7 @@ list(nlflag)
tokpushback++;
}
checkkwd = 2;
- if (tokendlist[peektoken()])
+ if (peektoken())
return n1;
break;
case TEOF:
@@ -9572,7 +9889,7 @@ command() {
n1->type = (lasttoken == TWHILE)? NWHILE : NUNTIL;
n1->nbinary.ch1 = list(0);
if ((got=readtoken()) != TDO) {
-TRACE(("expecting DO got %s %s\n", tokname[got], got == TWORD ? wordtext : ""));
+TRACE(("expecting DO got %s %s\n", tokname(got), got == TWORD ? wordtext : ""));
synexpect(TDO);
}
n1->nbinary.ch2 = list(0);
@@ -9901,13 +10218,13 @@ parseheredoc() {
}
}
-static int
+static char
peektoken() {
int t;
t = readtoken();
tokpushback++;
- return (t);
+ return tokname_array[t][0];
}
static int
@@ -9954,8 +10271,8 @@ top:
const char *const *pp;
if ((pp = findkwd(wordtext))) {
- lasttoken = t = pp - parsekwd + KWDOFFSET;
- TRACE(("keyword %s recognized\n", tokname[t]));
+ lasttoken = t = pp - tokname_array;
+ TRACE(("keyword %s recognized\n", tokname(t)));
goto out;
}
}
@@ -9983,9 +10300,9 @@ top:
out:
#ifdef DEBUG
if (!alreadyseen)
- TRACE(("token %s %s\n", tokname[t], t == TWORD || t == TASSIGN ? wordtext : ""));
+ TRACE(("token %s %s\n", tokname(t), t == TWORD || t == TASSIGN ? wordtext : ""));
else
- TRACE(("reread token %s %s\n", tokname[t], t == TWORD || t == TASSIGN ? wordtext : ""));
+ TRACE(("reread token %s %s\n", tokname(t), t == TWORD || t == TASSIGN ? wordtext : ""));
#endif
return (t);
}
@@ -10103,12 +10420,8 @@ breakloop:
#define PARSEARITH() {goto parsearith; parsearith_return:;}
static int
-readtoken1(firstc, syntax, eofmark, striptabs)
- int firstc;
- char const *syntax;
- char *eofmark;
- int striptabs;
- {
+readtoken1(int firstc, int syntax, const char *eofmark, int striptabs)
+{
int c = firstc;
char *out;
int len;
@@ -10121,7 +10434,7 @@ readtoken1(firstc, syntax, eofmark, striptabs)
int parenlevel; /* levels of parens in arithmetic */
int dqvarnest; /* levels of variables expansion within double quotes */
int oldstyle;
- char const *prevsyntax; /* syntax before arithmetic */
+ int prevsyntax; /* syntax before arithmetic */
#if __GNUC__
/* Avoid longjmp clobbering */
(void) &out;
@@ -10152,7 +10465,7 @@ readtoken1(firstc, syntax, eofmark, striptabs)
CHECKEND(); /* set c to PEOF if at end of here document */
for (;;) { /* until end of line or end of word */
CHECKSTRSPACE(3, out); /* permit 3 calls to USTPUTC */
- switch(syntax[c]) {
+ switch(SIT(c,syntax)) {
case CNL: /* '\n' */
if (syntax == BASESYNTAX)
goto endword; /* exit outer loop */
@@ -10187,7 +10500,7 @@ readtoken1(firstc, syntax, eofmark, striptabs)
if (dblquote && c != '\\' && c != '`' && c != '$'
&& (c != '"' || eofmark != NULL))
USTPUTC('\\', out);
- if (SQSYNTAX[c] == CCTL)
+ if (SIT(c,SQSYNTAX) == CCTL)
USTPUTC(CTLESC, out);
else if (eofmark == NULL)
USTPUTC(CTLQUOTEMARK, out);
@@ -10338,7 +10651,7 @@ checkend: {
}
if (c == *eofmark) {
if (pfgets(line, sizeof line) != NULL) {
- char *p, *q;
+ const char *p, *q;
p = line;
for (q = eofmark + 1 ; *q && *p == *q ; p++, q++);
@@ -10728,7 +11041,7 @@ noexpand(text)
continue;
if (c == CTLESC)
p++;
- else if (BASESYNTAX[(int)c] == CCTL)
+ else if (SIT(c,BASESYNTAX) == CCTL)
return 0;
}
return 1;
@@ -10767,13 +11080,11 @@ synexpect(token)
int token;
{
char msg[64];
+ int l;
- if (token >= 0) {
- snprintf(msg, 64, "%s unexpected (expecting %s)",
- tokname[lasttoken], tokname[token]);
- } else {
- snprintf(msg, 64, "%s unexpected", tokname[lasttoken]);
- }
+ l = sprintf(msg, "%s unexpected", tokname(lasttoken));
+ if (token >= 0)
+ sprintf(msg+l, " (expecting %s)", tokname(token));
synerror(msg);
/* NOTREACHED */
}
@@ -11162,435 +11473,6 @@ dup_as_newfd(from, to)
return newfd;
}
-/*#ifdef __weak_alias
-__weak_alias(getmode,_getmode)
-__weak_alias(setmode,_setmode)
-#endif*/
-
-#ifndef S_ISTXT
-#if defined(__GLIBC__) && __GLIBC__ >= 2
-#define S_ISTXT __S_ISVTX
-#else
-#define S_ISTXT S_ISVTX
-#endif
-#endif
-
-#define SET_LEN 6 /* initial # of bitcmd struct to malloc */
-#define SET_LEN_INCR 4 /* # of bitcmd structs to add as needed */
-
-typedef struct bitcmd {
- char cmd;
- char cmd2;
- mode_t bits;
-} BITCMD;
-
-#define CMD2_CLR 0x01
-#define CMD2_SET 0x02
-#define CMD2_GBITS 0x04
-#define CMD2_OBITS 0x08
-#define CMD2_UBITS 0x10
-
-static BITCMD *addcmd (BITCMD *, int, int, int, u_int);
-static void compress_mode (BITCMD *);
-#ifdef SETMODE_DEBUG
-static void dumpmode (BITCMD *);
-#endif
-
-/*
- * Given the old mode and an array of bitcmd structures, apply the operations
- * described in the bitcmd structures to the old mode, and return the new mode.
- * Note that there is no '=' command; a strict assignment is just a '-' (clear
- * bits) followed by a '+' (set bits).
- */
-static mode_t
-getmode(bbox, omode)
- const void *bbox;
- mode_t omode;
-{
- const BITCMD *set;
- mode_t clrval, newmode, value;
-
- _DIAGASSERT(bbox != NULL);
-
- set = (const BITCMD *)bbox;
- newmode = omode;
- for (value = 0;; set++)
- switch(set->cmd) {
- /*
- * When copying the user, group or other bits around, we "know"
- * where the bits are in the mode so that we can do shifts to
- * copy them around. If we don't use shifts, it gets real
- * grundgy with lots of single bit checks and bit sets.
- */
- case 'u':
- value = (newmode & S_IRWXU) >> 6;
- goto common;
-
- case 'g':
- value = (newmode & S_IRWXG) >> 3;
- goto common;
-
- case 'o':
- value = newmode & S_IRWXO;
-common: if (set->cmd2 & CMD2_CLR) {
- clrval =
- (set->cmd2 & CMD2_SET) ? S_IRWXO : value;
- if (set->cmd2 & CMD2_UBITS)
- newmode &= ~((clrval<<6) & set->bits);
- if (set->cmd2 & CMD2_GBITS)
- newmode &= ~((clrval<<3) & set->bits);
- if (set->cmd2 & CMD2_OBITS)
- newmode &= ~(clrval & set->bits);
- }
- if (set->cmd2 & CMD2_SET) {
- if (set->cmd2 & CMD2_UBITS)
- newmode |= (value<<6) & set->bits;
- if (set->cmd2 & CMD2_GBITS)
- newmode |= (value<<3) & set->bits;
- if (set->cmd2 & CMD2_OBITS)
- newmode |= value & set->bits;
- }
- break;
-
- case '+':
- newmode |= set->bits;
- break;
-
- case '-':
- newmode &= ~set->bits;
- break;
-
- case 'X':
- if (omode & (S_IFDIR|S_IXUSR|S_IXGRP|S_IXOTH))
- newmode |= set->bits;
- break;
-
- case '\0':
- default:
-#ifdef SETMODE_DEBUG
- (void)printf("getmode:%04o -> %04o\n", omode, newmode);
-#endif
- return (newmode);
- }
-}
-
-#define ADDCMD(a, b, c, d) do { \
- if (set >= endset) { \
- BITCMD *newset; \
- setlen += SET_LEN_INCR; \
- newset = realloc(saveset, sizeof(BITCMD) * setlen); \
- if (newset == NULL) { \
- free(saveset); \
- return (NULL); \
- } \
- set = newset + (set - saveset); \
- saveset = newset; \
- endset = newset + (setlen - 2); \
- } \
- set = addcmd(set, (a), (b), (c), (d)); \
-} while (/*CONSTCOND*/0)
-
-#define STANDARD_BITS (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
-
-static void *
-setmode(p)
- const char *p;
-{
- int perm, who;
- char op, *ep;
- BITCMD *set, *saveset, *endset;
- sigset_t mysigset, sigoset;
- mode_t mask;
- int equalopdone = 0; /* pacify gcc */
- int permXbits, setlen;
-
- if (!*p)
- return (NULL);
-
- /*
- * Get a copy of the mask for the permissions that are mask relative.
- * Flip the bits, we want what's not set. Since it's possible that
- * the caller is opening files inside a signal handler, protect them
- * as best we can.
- */
- sigfillset(&mysigset);
- (void)sigprocmask(SIG_BLOCK, &mysigset, &sigoset);
- (void)umask(mask = umask(0));
- mask = ~mask;
- (void)sigprocmask(SIG_SETMASK, &sigoset, NULL);
-
- setlen = SET_LEN + 2;
-
- if ((set = malloc((u_int)(sizeof(BITCMD) * setlen))) == NULL)
- return (NULL);
- saveset = set;
- endset = set + (setlen - 2);
-
- /*
- * If an absolute number, get it and return; disallow non-octal digits
- * or illegal bits.
- */
- if (is_digit((unsigned char)*p)) {
- perm = (mode_t)strtol(p, &ep, 8);
- if (*ep || perm & ~(STANDARD_BITS|S_ISTXT)) {
- free(saveset);
- return (NULL);
- }
- ADDCMD('=', (STANDARD_BITS|S_ISTXT), perm, mask);
- set->cmd = 0;
- return (saveset);
- }
-
- /*
- * Build list of structures to set/clear/copy bits as described by
- * each clause of the symbolic mode.
- */
- for (;;) {
- /* First, find out which bits might be modified. */
- for (who = 0;; ++p) {
- switch (*p) {
- case 'a':
- who |= STANDARD_BITS;
- break;
- case 'u':
- who |= S_ISUID|S_IRWXU;
- break;
- case 'g':
- who |= S_ISGID|S_IRWXG;
- break;
- case 'o':
- who |= S_IRWXO;
- break;
- default:
- goto getop;
- }
- }
-
-getop: if ((op = *p++) != '+' && op != '-' && op != '=') {
- free(saveset);
- return (NULL);
- }
- if (op == '=')
- equalopdone = 0;
-
- who &= ~S_ISTXT;
- for (perm = 0, permXbits = 0;; ++p) {
- switch (*p) {
- case 'r':
- perm |= S_IRUSR|S_IRGRP|S_IROTH;
- break;
- case 's':
- /*
- * If specific bits where requested and
- * only "other" bits ignore set-id.
- */
- if (who == 0 || (who & ~S_IRWXO))
- perm |= S_ISUID|S_ISGID;
- break;
- case 't':
- /*
- * If specific bits where requested and
- * only "other" bits ignore set-id.
- */
- if (who == 0 || (who & ~S_IRWXO)) {
- who |= S_ISTXT;
- perm |= S_ISTXT;
- }
- break;
- case 'w':
- perm |= S_IWUSR|S_IWGRP|S_IWOTH;
- break;
- case 'X':
- permXbits = S_IXUSR|S_IXGRP|S_IXOTH;
- break;
- case 'x':
- perm |= S_IXUSR|S_IXGRP|S_IXOTH;
- break;
- case 'u':
- case 'g':
- case 'o':
- /*
- * When ever we hit 'u', 'g', or 'o', we have
- * to flush out any partial mode that we have,
- * and then do the copying of the mode bits.
- */
- if (perm) {
- ADDCMD(op, who, perm, mask);
- perm = 0;
- }
- if (op == '=')
- equalopdone = 1;
- if (op == '+' && permXbits) {
- ADDCMD('X', who, permXbits, mask);
- permXbits = 0;
- }
- ADDCMD(*p, who, op, mask);
- break;
-
- default:
- /*
- * Add any permissions that we haven't already
- * done.
- */
- if (perm || (op == '=' && !equalopdone)) {
- if (op == '=')
- equalopdone = 1;
- ADDCMD(op, who, perm, mask);
- perm = 0;
- }
- if (permXbits) {
- ADDCMD('X', who, permXbits, mask);
- permXbits = 0;
- }
- goto apply;
- }
- }
-
-apply: if (!*p)
- break;
- if (*p != ',')
- goto getop;
- ++p;
- }
- set->cmd = 0;
-#ifdef SETMODE_DEBUG
- (void)printf("Before compress_mode()\n");
- dumpmode(saveset);
-#endif
- compress_mode(saveset);
-#ifdef SETMODE_DEBUG
- (void)printf("After compress_mode()\n");
- dumpmode(saveset);
-#endif
- return (saveset);
-}
-
-static BITCMD *
-addcmd(set, op, who, oparg, mask)
- BITCMD *set;
- int oparg, who;
- int op;
- u_int mask;
-{
-
- _DIAGASSERT(set != NULL);
-
- switch (op) {
- case '=':
- set->cmd = '-';
- set->bits = who ? who : STANDARD_BITS;
- set++;
-
- op = '+';
- /* FALLTHROUGH */
- case '+':
- case '-':
- case 'X':
- set->cmd = op;
- set->bits = (who ? who : mask) & oparg;
- break;
-
- case 'u':
- case 'g':
- case 'o':
- set->cmd = op;
- if (who) {
- set->cmd2 = ((who & S_IRUSR) ? CMD2_UBITS : 0) |
- ((who & S_IRGRP) ? CMD2_GBITS : 0) |
- ((who & S_IROTH) ? CMD2_OBITS : 0);
- set->bits = (mode_t)~0;
- } else {
- set->cmd2 = CMD2_UBITS | CMD2_GBITS | CMD2_OBITS;
- set->bits = mask;
- }
-
- if (oparg == '+')
- set->cmd2 |= CMD2_SET;
- else if (oparg == '-')
- set->cmd2 |= CMD2_CLR;
- else if (oparg == '=')
- set->cmd2 |= CMD2_SET|CMD2_CLR;
- break;
- }
- return (set + 1);
-}
-
-#ifdef SETMODE_DEBUG
-static void
-dumpmode(set)
- BITCMD *set;
-{
-
- _DIAGASSERT(set != NULL);
-
- for (; set->cmd; ++set)
- (void)printf("cmd: '%c' bits %04o%s%s%s%s%s%s\n",
- set->cmd, set->bits, set->cmd2 ? " cmd2:" : "",
- set->cmd2 & CMD2_CLR ? " CLR" : "",
- set->cmd2 & CMD2_SET ? " SET" : "",
- set->cmd2 & CMD2_UBITS ? " UBITS" : "",
- set->cmd2 & CMD2_GBITS ? " GBITS" : "",
- set->cmd2 & CMD2_OBITS ? " OBITS" : "");
-}
-#endif
-
-/*
- * Given an array of bitcmd structures, compress by compacting consecutive
- * '+', '-' and 'X' commands into at most 3 commands, one of each. The 'u',
- * 'g' and 'o' commands continue to be separate. They could probably be
- * compacted, but it's not worth the effort.
- */
-static void
-compress_mode(set)
- BITCMD *set;
-{
- BITCMD *nset;
- int setbits, clrbits, Xbits, op;
-
- _DIAGASSERT(set != NULL);
-
- for (nset = set;;) {
- /* Copy over any 'u', 'g' and 'o' commands. */
- while ((op = nset->cmd) != '+' && op != '-' && op != 'X') {
- *set++ = *nset++;
- if (!op)
- return;
- }
-
- for (setbits = clrbits = Xbits = 0;; nset++) {
- if ((op = nset->cmd) == '-') {
- clrbits |= nset->bits;
- setbits &= ~nset->bits;
- Xbits &= ~nset->bits;
- } else if (op == '+') {
- setbits |= nset->bits;
- clrbits &= ~nset->bits;
- Xbits &= ~nset->bits;
- } else if (op == 'X')
- Xbits |= nset->bits & ~setbits;
- else
- break;
- }
- if (clrbits) {
- set->cmd = '-';
- set->cmd2 = 0;
- set->bits = clrbits;
- set++;
- }
- if (setbits) {
- set->cmd = '+';
- set->cmd2 = 0;
- set->bits = setbits;
- set++;
- }
- if (Xbits) {
- set->cmd = 'X';
- set->cmd2 = 0;
- set->bits = Xbits;
- set++;
- }
- }
-}
#ifdef DEBUG
static void shtree (union node *, int, char *, FILE*);
static void shcmd (union node *, FILE *);
@@ -11683,6 +11565,16 @@ shcmd(cmd, fp)
for (np = cmd->ncmd.redirect ; np ; np = np->nfile.next) {
if (! first)
putchar(' ');
+#if 1
+ s = "*error*";
+ dftfd = 0;
+ if ((np->nfile.type <= NFROMFD) && (np->nfile.type >= NTO)) {
+ s = redir_strings[np->nfile.type - NTO];
+ if (*s == '>') {
+ dftfd = 1;
+ }
+ }
+#else
switch (np->nfile.type) {
case NTO: s = ">"; dftfd = 1; break;
case NAPPEND: s = ">>"; dftfd = 1; break;
@@ -11693,6 +11585,7 @@ shcmd(cmd, fp)
case NFROMTO: s = "<>"; dftfd = 0; break;
default: s = "*error*"; dftfd = 0; break;
}
+#endif
if (np->nfile.fd != dftfd)
fprintf(fp, "%d", np->nfile.fd);
fputs(s, fp);
@@ -12094,16 +11987,8 @@ setsignal(int signo)
}
if (*t == S_HARD_IGN || *t == action)
return;
- switch (action) {
- case S_CATCH:
- act.sa_handler = onsig;
- break;
- case S_IGN:
- act.sa_handler = SIG_IGN;
- break;
- default:
- act.sa_handler = SIG_DFL;
- }
+ act.sa_handler = ((action == S_CATCH) ? onsig
+ : ((action == S_IGN) ? SIG_IGN : SIG_DFL));
*t = action;
act.sa_flags = 0;
sigemptyset(&act.sa_mask);
@@ -12785,7 +12670,7 @@ findvar(struct var **vpp, const char *name)
/*
* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
* This file contains code for the times builtin.
- * $Id: ash.c,v 1.19 2001/08/10 18:42:04 andersen Exp $
+ * $Id: ash.c,v 1.20 2001/08/10 19:36:07 mjn3 Exp $
*/
static int timescmd (int argc, char **argv)
{
generated by cgit v1.1 at 2024-12-27 12:07:44 +0000