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-rw-r--r--utility.c255
1 files changed, 148 insertions, 107 deletions
diff --git a/utility.c b/utility.c
index 191701b..a27aaa2 100644
--- a/utility.c
+++ b/utility.c
@@ -25,6 +25,17 @@
*/
#include "internal.h"
+#if defined (BB_CHMOD_CHOWN_CHGRP) \
+ || defined (BB_CP_MV) \
+ || defined (BB_FIND) \
+ || defined (BB_LS) \
+ || defined (BB_INSMOD)
+/* same conditions as recursiveAction */
+#define bb_need_name_too_long
+#endif
+#define BB_DECLARE_EXTERN
+#include "messages.c"
+
#include <stdio.h>
#include <string.h>
#include <errno.h>
@@ -35,6 +46,7 @@
#include <sys/stat.h>
#include <unistd.h>
#include <ctype.h>
+#include <sys/param.h> /* for PATH_MAX */
#if defined BB_FEATURE_MOUNT_LOOP
#include <fcntl.h>
@@ -58,9 +70,10 @@ const char mtab_file[] = "/etc/mtab";
extern void usage(const char *usage)
{
- fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n", BB_VER, BB_BT);
+ fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n",
+ BB_VER, BB_BT);
fprintf(stderr, "Usage: %s\n", usage);
- exit(FALSE);
+ exit FALSE;
}
@@ -78,9 +91,8 @@ get_kernel_revision()
{
FILE *file;
int major=0, minor=0, patch=0;
- char* filename="/proc/sys/kernel/osrelease";
- file = fopen(filename,"r");
+ file = fopen("/proc/sys/kernel/osrelease", "r");
if (file == NULL) {
/* bummer, /proc must not be mounted... */
return( 0);
@@ -89,28 +101,34 @@ get_kernel_revision()
fclose(file);
return major*65536 + minor*256 + patch;
}
+#endif /* BB_INIT || BB_PS */
-#endif
-
-#if defined (BB_CP) || defined (BB_MV)
+#if defined (BB_CP_MV) || defined (BB_DU) || defined (BB_LN)
/*
* Return TRUE if a fileName is a directory.
* Nonexistant files return FALSE.
*/
-int isDirectory(const char *name)
+int isDirectory(const char *fileName, const int followLinks)
{
struct stat statBuf;
+ int status;
- if (stat(name, &statBuf) < 0)
- return FALSE;
+ if (followLinks == TRUE)
+ status = stat(fileName, &statBuf);
+ else
+ status = lstat(fileName, &statBuf);
+
+ if (status < 0)
+ return FALSE;
if (S_ISDIR(statBuf.st_mode))
- return TRUE;
- return(FALSE);
+ return TRUE;
+ return FALSE;
}
+#endif
-
+#if defined (BB_CP_MV)
/*
* Copy one file to another, while possibly preserving its modes, times,
* and modes. Returns TRUE if successful, or FALSE on a failure with an
@@ -120,33 +138,33 @@ int isDirectory(const char *name)
*/
int
copyFile( const char *srcName, const char *destName,
- int setModes, int followLinks)
+ int setModes, int followLinks)
{
int rfd;
int wfd;
int rcc;
- int result;
+ int status;
char buf[BUF_SIZE];
struct stat srcStatBuf;
struct stat dstStatBuf;
struct utimbuf times;
- /* Grab the source file's stats */
- if (followLinks == FALSE)
- result = stat(srcName, &srcStatBuf);
+ if (followLinks == TRUE)
+ status = stat(srcName, &srcStatBuf);
else
- result = lstat(srcName, &srcStatBuf);
- if (result < 0) {
+ status = lstat(srcName, &srcStatBuf);
+
+ if (status < 0) {
perror(srcName);
return FALSE;
}
- /* Grab the dest file's stats */
- if (followLinks == FALSE)
- result = stat(destName, &dstStatBuf);
- else
- result = lstat(destName, &dstStatBuf);
- if (result < 0) {
+ if (followLinks == TRUE)
+ status = stat(destName, &dstStatBuf);
+ else
+ status = lstat(destName, &dstStatBuf);
+
+ if (status < 0) {
dstStatBuf.st_ino = -1;
dstStatBuf.st_dev = -1;
}
@@ -160,45 +178,49 @@ copyFile( const char *srcName, const char *destName,
if (S_ISDIR(srcStatBuf.st_mode)) {
//fprintf(stderr, "copying directory %s to %s\n", srcName, destName);
/* Make sure the directory is writable */
- result = mkdir(destName, 0777777 ^ umask(0));
- if (result < 0 && errno != EEXIST) {
+ status = mkdir(destName, 0777777 ^ umask(0));
+ if (status < 0 && errno != EEXIST) {
perror(destName);
- return (FALSE);
+ return FALSE;
}
} else if (S_ISLNK(srcStatBuf.st_mode)) {
- char *link_val;
+ char link_val[PATH_MAX + 1];
int link_size;
//fprintf(stderr, "copying link %s to %s\n", srcName, destName);
- link_val = (char *) alloca(PATH_MAX + 2);
- link_size = readlink(srcName, link_val, PATH_MAX + 1);
+ /* Warning: This could possibly truncate silently, to PATH_MAX chars */
+ link_size = readlink(srcName, &link_val[0], PATH_MAX);
if (link_size < 0) {
perror(srcName);
- return (FALSE);
+ return FALSE;
}
link_val[link_size] = '\0';
- link_size = symlink(link_val, destName);
- if (link_size != 0) {
+ status = symlink(link_val, destName);
+ if (status < 0) {
perror(destName);
- return (FALSE);
+ return FALSE;
}
#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
if (setModes == TRUE) {
- lchown(destName, srcStatBuf.st_uid, srcStatBuf.st_gid);
+ if (lchown(destName, srcStatBuf.st_uid, srcStatBuf.st_gid) < 0) {
+ perror(destName);
+ return FALSE;
+ }
}
#endif
+ return TRUE;
} else if (S_ISFIFO(srcStatBuf.st_mode)) {
//fprintf(stderr, "copying fifo %s to %s\n", srcName, destName);
- if (mkfifo(destName, 0644)) {
+ if (mkfifo(destName, 0644) < 0) {
perror(destName);
- return (FALSE);
+ return FALSE;
}
} else if (S_ISBLK(srcStatBuf.st_mode) || S_ISCHR(srcStatBuf.st_mode)
- || S_ISSOCK (srcStatBuf.st_mode)) {
+ || S_ISSOCK (srcStatBuf.st_mode)) {
//fprintf(stderr, "copying soc, blk, or chr %s to %s\n", srcName, destName);
- if (mknod(destName, srcStatBuf.st_mode, srcStatBuf.st_rdev)) {
+ if (mknod(destName, srcStatBuf.st_mode, srcStatBuf.st_rdev) < 0) {
perror(destName);
- return (FALSE);
+ return FALSE;
}
} else if (S_ISREG(srcStatBuf.st_mode)) {
//fprintf(stderr, "copying regular file %s to %s\n", srcName, destName);
@@ -208,7 +230,7 @@ copyFile( const char *srcName, const char *destName,
return FALSE;
}
- wfd = creat(destName, srcStatBuf.st_mode);
+ wfd = open(destName, O_WRONLY | O_CREAT | O_TRUNC, srcStatBuf.st_mode);
if (wfd < 0) {
perror(destName);
close(rfd);
@@ -231,24 +253,32 @@ copyFile( const char *srcName, const char *destName,
if (setModes == TRUE) {
/* This is fine, since symlinks never get here */
- chown(destName, srcStatBuf.st_uid, srcStatBuf.st_gid);
- chmod(destName, srcStatBuf.st_mode);
+ if (chown(destName, srcStatBuf.st_uid, srcStatBuf.st_gid) < 0) {
+ perror(destName);
+ exit FALSE;
+ }
+ if (chmod(destName, srcStatBuf.st_mode) < 0) {
+ perror(destName);
+ exit FALSE;
+ }
times.actime = srcStatBuf.st_atime;
times.modtime = srcStatBuf.st_mtime;
- utime(destName, &times);
+ if (utime(destName, &times) < 0) {
+ perror(destName);
+ exit FALSE;
+ }
}
return TRUE;
-
- error_exit:
+ error_exit:
perror(destName);
close(rfd);
close(wfd);
return FALSE;
}
-#endif
+#endif /* BB_CP_MV */
@@ -296,7 +326,7 @@ const char *modeString(int mode)
}
return buf;
}
-#endif
+#endif /* BB_TAR || BB_LS */
#if defined BB_TAR
@@ -324,9 +354,9 @@ const char *timeString(time_t timeVal)
return buf;
}
-#endif
+#endif /* BB_TAR */
-#if defined BB_TAR || defined BB_CP || defined BB_MV
+#if defined BB_TAR || defined BB_CP_MV
/*
* Write all of the supplied buffer out to a file.
* This does multiple writes as necessary.
@@ -352,7 +382,7 @@ int fullWrite(int fd, const char *buf, int len)
return total;
}
-#endif
+#endif /* BB_TAR || BB_CP_MV */
#if defined BB_TAR || defined BB_TAIL
@@ -385,10 +415,14 @@ int fullRead(int fd, char *buf, int len)
return total;
}
-#endif
+#endif /* BB_TAR || BB_TAIL */
-#if defined (BB_CHMOD_CHOWN_CHGRP) || defined (BB_CP) || defined (BB_FIND) || defined (BB_LS) || defined (BB_INSMOD)
+#if defined (BB_CHMOD_CHOWN_CHGRP) \
+ || defined (BB_CP_MV) \
+ || defined (BB_FIND) \
+ || defined (BB_LS) \
+ || defined (BB_INSMOD)
/*
* Walk down all the directories under the specified
* location, and do something (something specified
@@ -399,13 +433,15 @@ int fullRead(int fd, char *buf, int len)
* and so isn't sufficiently portable to take over since glibc2.1
* is so stinking huge.
*/
-int
-recursiveAction(const char *fileName, int recurse, int followLinks, int depthFirst,
- int (*fileAction) (const char *fileName, struct stat* statbuf),
- int (*dirAction) (const char *fileName, struct stat* statbuf))
+int recursiveAction(const char *fileName,
+ int recurse, int followLinks, int depthFirst,
+ int (*fileAction) (const char *fileName,
+ struct stat* statbuf),
+ int (*dirAction) (const char *fileName,
+ struct stat* statbuf))
{
int status;
- struct stat statbuf, statbuf1;
+ struct stat statbuf;
struct dirent *next;
if (followLinks == TRUE)
@@ -414,16 +450,20 @@ recursiveAction(const char *fileName, int recurse, int followLinks, int depthFir
status = lstat(fileName, &statbuf);
if (status < 0) {
- //fprintf(stderr, "status=%d followLinks=%d TRUE=%d\n", status, followLinks, TRUE);
+#ifdef BB_DEBUG_PRINT_SCAFFOLD
+ fprintf(stderr,
+ "status=%d followLinks=%d TRUE=%d\n",
+ status, followLinks, TRUE);
+#endif
perror(fileName);
- return (FALSE);
+ return FALSE;
}
- if ( (followLinks == FALSE) && (S_ISLNK(statbuf.st_mode)) ) {
+ if ((followLinks == FALSE) && (S_ISLNK(statbuf.st_mode)) ) {
if (fileAction == NULL)
- return (TRUE);
+ return TRUE;
else
- return (fileAction(fileName, &statbuf));
+ return fileAction(fileName, &statbuf);
}
if (recurse == FALSE) {
@@ -431,67 +471,65 @@ recursiveAction(const char *fileName, int recurse, int followLinks, int depthFir
if (dirAction != NULL)
return (dirAction(fileName, &statbuf));
else
- return (TRUE);
- }
- }
-
- status = lstat(fileName, &statbuf1);
- if (status < 0) {
- perror(fileName);
- return (FALSE);
+ return TRUE;
+ }
}
- if (S_ISDIR(statbuf.st_mode) && S_ISDIR(statbuf1.st_mode)) {
+ if (S_ISDIR(statbuf.st_mode)) {
DIR *dir;
dir = opendir(fileName);
if (!dir) {
perror(fileName);
- return (FALSE);
+ return FALSE;
}
if (dirAction != NULL && depthFirst == FALSE) {
status = dirAction(fileName, &statbuf);
if (status == FALSE) {
perror(fileName);
- return (FALSE);
+ return FALSE;
}
}
while ((next = readdir(dir)) != NULL) {
- char nextFile[NAME_MAX];
+ char nextFile[PATH_MAX + 1];
if ((strcmp(next->d_name, "..") == 0)
- || (strcmp(next->d_name, ".") == 0)) {
+ || (strcmp(next->d_name, ".") == 0)) {
continue;
}
+ if (strlen(fileName) + strlen(next->d_name) + 1 > PATH_MAX) {
+ fprintf(stderr, name_too_long, "ftw");
+ return FALSE;
+ }
sprintf(nextFile, "%s/%s", fileName, next->d_name);
status =
recursiveAction(nextFile, TRUE, followLinks, depthFirst,
- fileAction, dirAction);
+ fileAction, dirAction);
if (status < 0) {
closedir(dir);
- return (FALSE);
+ return FALSE;
}
}
status = closedir(dir);
if (status < 0) {
perror(fileName);
- return (FALSE);
+ return FALSE;
}
if (dirAction != NULL && depthFirst == TRUE) {
status = dirAction(fileName, &statbuf);
if (status == FALSE) {
perror(fileName);
- return (FALSE);
+ return FALSE;
}
}
} else {
if (fileAction == NULL)
- return (TRUE);
+ return TRUE;
else
- return (fileAction(fileName, &statbuf));
+ return fileAction(fileName, &statbuf);
}
- return (TRUE);
+ return TRUE;
}
-#endif
+#endif /* BB_CHMOD_CHOWN_CHGRP || BB_CP_MV || BB_FIND || BB_LS || BB_INSMOD */
@@ -506,25 +544,25 @@ extern int createPath (const char *name, int mode)
{
char *cp;
char *cpOld;
- char buf[NAME_MAX];
+ char buf[PATH_MAX + 1];
int retVal=0;
strcpy( buf, name);
- cp = strchr (buf, '/');
+ cp = strchr(buf, '/');
while (cp) {
cpOld = cp;
- cp = strchr (cp + 1, '/');
+ cp = strchr(cp + 1, '/');
*cpOld = '\0';
- retVal = mkdir (buf, cp ? 0777 : mode);
+ retVal = mkdir(buf, cp ? 0777 : mode);
if (retVal != 0 && errno != EEXIST) {
- perror( buf);
- return( FALSE);
+ perror(buf);
+ return FALSE;
}
*cpOld = '/';
}
- return( TRUE);
+ return TRUE;
}
-#endif
+#endif /* BB_TAR || BB_MKDIR */
@@ -624,7 +662,7 @@ parse_mode( const char* s, mode_t* theMode)
}
-#endif
+#endif /* BB_CHMOD_CHOWN_CHGRP || BB_MKDIR */
@@ -712,7 +750,7 @@ my_getgrgid(char* group, gid_t gid)
}
-#endif
+#endif /* BB_CHMOD_CHOWN_CHGRP || BB_PS */
@@ -804,7 +842,7 @@ int get_console_fd(char* tty_name)
}
-#endif
+#endif /* BB_CHVT || BB_DEALLOCVT */
#if !defined BB_REGEXP && (defined BB_GREP || defined BB_SED)
@@ -883,8 +921,7 @@ extern int replace_match(char *haystack, char *needle, char *newNeedle, int igno
return FALSE;
}
-
-#endif
+#endif /* ! BB_REGEXP && (BB_GREP || BB_SED) */
#if defined BB_FIND
@@ -986,7 +1023,7 @@ check_wildcard_match(const char* text, const char* pattern)
return TRUE;
}
-#endif
+#endif /* BB_FIND */
@@ -1030,7 +1067,7 @@ extern struct mntent *findMountPoint(const char *name, const char *table)
endmntent(mountTable);
return mountEntry;
}
-#endif
+#endif /* BB_DF || BB_MTAB */
@@ -1052,7 +1089,8 @@ extern long getNum (const char *cp)
value = value * 10 + *cp++ - '0';
switch (*cp++) {
- case 'm':
+ case 'M':
+ case 'm': /* `tail' uses it traditionally */
value *= 1048576;
break;
@@ -1080,7 +1118,7 @@ extern long getNum (const char *cp)
return value;
}
-#endif
+#endif /* BB_DD || BB_TAIL */
#if defined BB_INIT || defined BB_HALT || defined BB_REBOOT
@@ -1120,9 +1158,12 @@ findInitPid()
}
return 0;
}
-#endif
+#endif /* BB_INIT || BB_HALT || BB_REBOOT */
-#if defined BB_GUNZIP || defined BB_GZIP || defined BB_PRINTF || defined BB_TAIL
+#if defined BB_GUNZIP \
+ || defined BB_GZIP \
+ || defined BB_PRINTF \
+ || defined BB_TAIL
extern void *xmalloc (size_t size)
{
void *cp = malloc (size);
@@ -1138,7 +1179,7 @@ extern void error(char *msg)
fprintf(stderr, "\n%s\n", msg);
exit(1);
}
-#endif
+#endif /* BB_GUNZIP || BB_GZIP || BB_PRINTF || BB_TAIL */
#if (__GLIBC__ < 2) && (defined BB_SYSLOGD || defined BB_INIT)
extern int vdprintf(int d, const char *format, va_list ap)
@@ -1149,7 +1190,7 @@ extern int vdprintf(int d, const char *format, va_list ap)
len = vsprintf(buf, format, ap);
return write(d, buf, len);
}
-#endif
+#endif /* BB_SYSLOGD */
#if defined BB_FEATURE_MOUNT_LOOP
extern int del_loop(const char *device)
generated by cgit v1.1 at 2024-12-28 05:56:43 +0000