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-rw-r--r--applets/applets.c35
-rw-r--r--include/applets.h48
-rw-r--r--include/busybox.h11
-rw-r--r--include/libbb.h5
-rw-r--r--shell/ash.c59
5 files changed, 65 insertions, 93 deletions
diff --git a/applets/applets.c b/applets/applets.c
index 8acfd95..c8e85cd 100644
--- a/applets/applets.c
+++ b/applets/applets.c
@@ -49,7 +49,7 @@ static const char usage_messages[] =
const unsigned short NUM_APPLETS = sizeof(applets) / sizeof(struct BB_applet) - 1;
-static struct BB_applet *current_applet;
+const struct BB_applet *current_applet;
const char *applet_name ATTRIBUTE_EXTERNALLY_VISIBLE;
#ifdef BB_NOMMU
smallint re_execed;
@@ -60,14 +60,11 @@ smallint re_execed;
#if ENABLE_FEATURE_SUID_CONFIG
/* applets[] is const, so we have to define this "override" structure */
-static struct BB_suid_config
-{
- struct BB_applet *m_applet;
-
+static struct BB_suid_config {
+ const struct BB_applet *m_applet;
uid_t m_uid;
gid_t m_gid;
mode_t m_mode;
-
struct BB_suid_config *m_next;
} *suid_config;
@@ -133,7 +130,7 @@ static void parse_config_file(void)
{
struct BB_suid_config *sct_head;
struct BB_suid_config *sct;
- struct BB_applet *applet;
+ const struct BB_applet *applet;
FILE *f;
const char *errmsg;
char *s;
@@ -330,7 +327,7 @@ static void parse_config_file(void)
#if ENABLE_FEATURE_SUID
-static void check_suid(struct BB_applet *applet)
+static void check_suid(const struct BB_applet *applet)
{
uid_t ruid = getuid(); /* real [ug]id */
uid_t rgid = getgid();
@@ -476,7 +473,7 @@ static int applet_name_compare(const void *name, const void *vapplet)
return strcmp(name, applet->name);
}
-struct BB_applet *find_applet_by_name(const char *name)
+const struct BB_applet *find_applet_by_name(const char *name)
{
/* Do a binary search to find the applet entry given the name. */
return bsearch(name, applets, NUM_APPLETS, sizeof(struct BB_applet),
@@ -599,17 +596,21 @@ static int busybox_main(int argc, char **argv)
bb_error_msg_and_die("applet not found");
}
+void run_current_applet_and_exit(int argc, char **argv)
+{
+ applet_name = current_applet->name;
+ if (argc == 2 && !strcmp(argv[1], "--help"))
+ bb_show_usage();
+ if (ENABLE_FEATURE_SUID)
+ check_suid(current_applet);
+ exit(current_applet->main(argc, argv));
+}
+
void run_applet_by_name(const char *name, int argc, char **argv)
{
current_applet = find_applet_by_name(name);
- if (current_applet) {
- applet_name = current_applet->name;
- if (argc == 2 && !strcmp(argv[1], "--help"))
- bb_show_usage();
- if (ENABLE_FEATURE_SUID)
- check_suid(current_applet);
- exit(current_applet->main(argc, argv));
- }
+ if (current_applet)
+ run_current_applet_and_exit(argc, argv);
if (!strncmp(name, "busybox", 7))
exit(busybox_main(argc, argv));
}
diff --git a/include/applets.h b/include/applets.h
index e8d75b7..f411aa2 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -27,27 +27,32 @@ s - suid type:
# define APPLET(name,l,s) int name##_main(int argc, char **argv);
# define APPLET_NOUSAGE(name,main,l,s) int main##_main(int argc, char **argv);
# define APPLET_ODDNAME(name,main,l,s,name2) int main##_main(int argc, char **argv);
+# define APPLET_NOEXEC(name,main,l,s,name2) int main##_main(int argc, char **argv);
#elif defined(MAKE_USAGE) && ENABLE_FEATURE_VERBOSE_USAGE
# define APPLET(name,l,s) name##_trivial_usage "\n\n" name##_full_usage "\0"
# define APPLET_NOUSAGE(name,main,l,s) "\b\0"
# define APPLET_ODDNAME(name,main,l,s,name2) name2##_trivial_usage "\n\n" name2##_full_usage "\0"
+# define APPLET_NOEXEC(name,main,l,s,name2) name2##_trivial_usage "\n\n" name2##_full_usage "\0"
#elif defined(MAKE_USAGE) && !ENABLE_FEATURE_VERBOSE_USAGE
# define APPLET(name,l,s) name##_trivial_usage "\0"
# define APPLET_NOUSAGE(name,main,l,s) "\b\0"
# define APPLET_ODDNAME(name,main,l,s,name2) name2##_trivial_usage "\0"
+# define APPLET_NOEXEC(name,main,l,s,name2) name2##_trivial_usage "\0"
#elif defined(MAKE_LINKS)
# define APPLET(name,l,c) LINK l name
# define APPLET_NOUSAGE(name,main,l,s) LINK l name
# define APPLET_ODDNAME(name,main,l,s,name2) LINK l name
+# define APPLET_NOEXEC(name,main,l,s,name2) LINK l name
#else
const struct BB_applet applets[] = { /* name,main,location,need_suid */
# define APPLET(name,l,s) {#name,name##_main,l,s},
# define APPLET_NOUSAGE(name,main,l,s) {#name,main##_main,l,s},
# define APPLET_ODDNAME(name,main,l,s,name2) {#name,main##_main,l,s},
+# define APPLET_NOEXEC(name,main,l,s,name2) {#name,main##_main,l,s,1},
#endif
#if ENABLE_INSTALL_NO_USR
@@ -55,7 +60,8 @@ s - suid type:
# define _BB_DIR_USR_SBIN _BB_DIR_SBIN
#endif
-USE_TEST(APPLET_NOUSAGE([, test, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+
+USE_TEST(APPLET_NOEXEC([, test, _BB_DIR_USR_BIN, _BB_SUID_NEVER, test))
USE_TEST(APPLET_NOUSAGE([[, test, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_ADDGROUP(APPLET(addgroup, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_ADDUSER(APPLET(adduser, _BB_DIR_BIN, _BB_SUID_NEVER))
@@ -64,20 +70,20 @@ USE_AR(APPLET(ar, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_ARP(APPLET(arp, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_ARPING(APPLET(arping, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_ASH(APPLET_NOUSAGE(ash, ash, _BB_DIR_BIN, _BB_SUID_NEVER))
-USE_AWK(APPLET(awk, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+USE_AWK(APPLET_NOEXEC(awk, awk, _BB_DIR_USR_BIN, _BB_SUID_NEVER, awk))
USE_BASENAME(APPLET(basename, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_BBCONFIG(APPLET(bbconfig, _BB_DIR_BIN, _BB_SUID_NEVER))
//USE_BBSH(APPLET(bbsh, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_BUNZIP2(APPLET(bunzip2, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_BUNZIP2(APPLET_ODDNAME(bzcat, bunzip2, _BB_DIR_USR_BIN, _BB_SUID_NEVER, bzcat))
USE_CAL(APPLET(cal, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
-USE_CAT(APPLET(cat, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_CAT(APPLET_NOEXEC(cat, cat, _BB_DIR_BIN, _BB_SUID_NEVER, cat))
USE_CATV(APPLET(catv, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_CHATTR(APPLET(chattr, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_CHCON(APPLET(chcon, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_CHGRP(APPLET(chgrp, _BB_DIR_BIN, _BB_SUID_NEVER))
-USE_CHMOD(APPLET(chmod, _BB_DIR_BIN, _BB_SUID_NEVER))
-USE_CHOWN(APPLET(chown, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_CHMOD(APPLET_NOEXEC(chmod, chmod, _BB_DIR_BIN, _BB_SUID_NEVER, chmod))
+USE_CHOWN(APPLET_NOEXEC(chown, chown, _BB_DIR_BIN, _BB_SUID_NEVER, chown))
USE_CHPST(APPLET(chpst, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_CHROOT(APPLET(chroot, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_CHRT(APPLET(chrt, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
@@ -86,14 +92,14 @@ USE_CKSUM(APPLET(cksum, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_CLEAR(APPLET(clear, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_CMP(APPLET(cmp, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_COMM(APPLET(comm, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
-USE_CP(APPLET(cp, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_CP(APPLET_NOEXEC(cp, cp, _BB_DIR_BIN, _BB_SUID_NEVER, cp))
USE_CPIO(APPLET(cpio, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_CROND(APPLET(crond, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_CRONTAB(APPLET(crontab, _BB_DIR_USR_BIN, _BB_SUID_ALWAYS))
-USE_CUT(APPLET(cut, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+USE_CUT(APPLET_NOEXEC(cut, cut, _BB_DIR_USR_BIN, _BB_SUID_NEVER, cut))
USE_DATE(APPLET(date, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_DC(APPLET(dc, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
-USE_DD(APPLET(dd, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_DD(APPLET_NOEXEC(dd, dd, _BB_DIR_BIN, _BB_SUID_NEVER, dd))
USE_DEALLOCVT(APPLET(deallocvt, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_DELGROUP(APPLET_ODDNAME(delgroup, deluser, _BB_DIR_BIN, _BB_SUID_NEVER, delgroup))
USE_DELUSER(APPLET(deluser, _BB_DIR_BIN, _BB_SUID_NEVER))
@@ -112,7 +118,7 @@ USE_DUMPKMAP(APPLET(dumpkmap, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_APP_DUMPLEASES(APPLET(dumpleases, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
//USE_E2FSCK(APPLET(e2fsck, _BB_DIR_SBIN, _BB_SUID_NEVER))
//USE_E2LABEL(APPLET_NOUSAGE(e2label, tune2fs, _BB_DIR_SBIN, _BB_SUID_NEVER))
-USE_ECHO(APPLET(echo, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_ECHO(APPLET_NOEXEC(echo, echo, _BB_DIR_BIN, _BB_SUID_NEVER, echo))
USE_ED(APPLET(ed, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_FEATURE_GREP_EGREP_ALIAS(APPLET_NOUSAGE(egrep, grep, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_EJECT(APPLET(eject, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
@@ -128,7 +134,7 @@ USE_FDFLUSH(APPLET_ODDNAME(fdflush, freeramdisk, _BB_DIR_BIN, _BB_SUID_NEVER, fd
USE_FDFORMAT(APPLET(fdformat, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_FDISK(APPLET(fdisk, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_FEATURE_GREP_FGREP_ALIAS(APPLET_NOUSAGE(fgrep, grep, _BB_DIR_BIN, _BB_SUID_NEVER))
-USE_FIND(APPLET(find, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+USE_FIND(APPLET_NOEXEC(find, find, _BB_DIR_USR_BIN, _BB_SUID_NEVER, find))
//USE_FINDFS(APPLET_NOUSAGE(findfs, tune2fs, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_FOLD(APPLET(fold, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_FREE(APPLET(free, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
@@ -150,7 +156,7 @@ USE_GZIP(APPLET(gzip, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_HALT(APPLET(halt, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_HDPARM(APPLET(hdparm, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_HEAD(APPLET(head, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
-USE_HEXDUMP(APPLET(hexdump, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+USE_HEXDUMP(APPLET_NOEXEC(hexdump, hexdump, _BB_DIR_USR_BIN, _BB_SUID_NEVER, hexdump))
USE_HOSTID(APPLET(hostid, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_HOSTNAME(APPLET(hostname, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_HTTPD(APPLET(httpd, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
@@ -184,7 +190,7 @@ USE_LESS(APPLET(less, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_SETARCH(APPLET_NOUSAGE(linux32, setarch, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_SETARCH(APPLET_NOUSAGE(linux64, setarch, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_FEATURE_INITRD(APPLET_NOUSAGE(linuxrc, init, _BB_DIR_ROOT, _BB_SUID_NEVER))
-USE_LN(APPLET(ln, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_LN(APPLET_NOEXEC(ln, ln, _BB_DIR_BIN, _BB_SUID_NEVER, ln))
USE_LOAD_POLICY(APPLET(load_policy, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_LOADFONT(APPLET(loadfont, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_LOADKMAP(APPLET(loadkmap, _BB_DIR_SBIN, _BB_SUID_NEVER))
@@ -193,7 +199,7 @@ USE_LOGIN(APPLET(login, _BB_DIR_BIN, _BB_SUID_ALWAYS))
USE_LOGNAME(APPLET(logname, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_LOGREAD(APPLET(logread, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_LOSETUP(APPLET(losetup, _BB_DIR_SBIN, _BB_SUID_NEVER))
-USE_LS(APPLET(ls, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_LS(APPLET_NOEXEC(ls, ls, _BB_DIR_BIN, _BB_SUID_NEVER, ls))
USE_LSATTR(APPLET(lsattr, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_LSMOD(APPLET(lsmod, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_UNLZMA(APPLET_ODDNAME(lzmacat, unlzma, _BB_DIR_USR_BIN, _BB_SUID_NEVER, lzmacat))
@@ -202,7 +208,7 @@ USE_MAKEDEVS(APPLET(makedevs, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_MD5SUM(APPLET_ODDNAME(md5sum, md5_sha1_sum, _BB_DIR_USR_BIN, _BB_SUID_NEVER, md5sum))
USE_MDEV(APPLET(mdev, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_MESG(APPLET(mesg, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
-USE_MKDIR(APPLET(mkdir, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_MKDIR(APPLET_NOEXEC(mkdir, mkdir, _BB_DIR_BIN, _BB_SUID_NEVER, mkdir))
//USE_MKE2FS(APPLET(mke2fs, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_MKFIFO(APPLET(mkfifo, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
//USE_MKE2FS(APPLET_NOUSAGE(mkfs.ext2, mke2fs, _BB_DIR_SBIN, _BB_SUID_NEVER))
@@ -249,7 +255,7 @@ USE_HALT(APPLET_ODDNAME(reboot, halt, _BB_DIR_SBIN, _BB_SUID_NEVER, reboot))
USE_RENICE(APPLET(renice, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_RESET(APPLET(reset, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_RESIZE(APPLET(resize, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
-USE_RM(APPLET(rm, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_RM(APPLET_NOEXEC(rm, rm, _BB_DIR_BIN, _BB_SUID_NEVER, rm))
USE_RMDIR(APPLET(rmdir, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_RMMOD(APPLET(rmmod, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_ROUTE(APPLET(route, _BB_DIR_SBIN, _BB_SUID_NEVER))
@@ -278,7 +284,7 @@ USE_FEATURE_SH_IS_MSH(APPLET_NOUSAGE(sh, msh, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_SHA1SUM(APPLET_ODDNAME(sha1sum, md5_sha1_sum, _BB_DIR_USR_BIN, _BB_SUID_NEVER, sha1sum))
USE_SLEEP(APPLET(sleep, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_SOFTLIMIT(APPLET_ODDNAME(softlimit, chpst, _BB_DIR_USR_BIN, _BB_SUID_NEVER, softlimit))
-USE_SORT(APPLET(sort, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+USE_SORT(APPLET_NOEXEC(sort, sort, _BB_DIR_USR_BIN, _BB_SUID_NEVER, sort))
USE_SPLIT(APPLET(split, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_START_STOP_DAEMON(APPLET_ODDNAME(start-stop-daemon, start_stop_daemon, _BB_DIR_SBIN, _BB_SUID_NEVER, start_stop_daemon))
USE_STAT(APPLET(stat, _BB_DIR_BIN, _BB_SUID_NEVER))
@@ -302,13 +308,13 @@ USE_TCPSVD(APPLET_ODDNAME(tcpsvd, tcpudpsvd, _BB_DIR_USR_BIN, _BB_SUID_NEVER, tc
USE_TEE(APPLET(tee, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_TELNET(APPLET(telnet, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_TELNETD(APPLET(telnetd, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
-USE_TEST(APPLET(test, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+USE_TEST(APPLET_NOEXEC(test, test, _BB_DIR_USR_BIN, _BB_SUID_NEVER, test))
#if ENABLE_FEATURE_TFTP_GET || ENABLE_FEATURE_TFTP_PUT
USE_TFTP(APPLET(tftp, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
#endif
USE_TIME(APPLET(time, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_TOP(APPLET(top, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
-USE_TOUCH(APPLET(touch, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_TOUCH(APPLET_NOEXEC(touch, touch, _BB_DIR_BIN, _BB_SUID_NEVER, touch))
USE_TR(APPLET(tr, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_TRACEROUTE(APPLET(traceroute, _BB_DIR_USR_BIN, _BB_SUID_MAYBE))
USE_TRUE(APPLET(true, _BB_DIR_BIN, _BB_SUID_NEVER))
@@ -338,17 +344,17 @@ USE_WGET(APPLET(wget, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_WHICH(APPLET(which, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_WHO(APPLET(who, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_WHOAMI(APPLET(whoami, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
-USE_XARGS(APPLET(xargs, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+USE_XARGS(APPLET_NOEXEC(xargs, xargs, _BB_DIR_USR_BIN, _BB_SUID_NEVER, xargs))
USE_YES(APPLET(yes, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_GUNZIP(APPLET_ODDNAME(zcat, gunzip, _BB_DIR_BIN, _BB_SUID_NEVER, zcat))
USE_ZCIP(APPLET(zcip, _BB_DIR_SBIN, _BB_SUID_NEVER))
#if !defined(PROTOTYPES) && !defined(MAKE_USAGE)
- { 0,NULL,0,0 }
+ { 0, NULL, 0, 0 }
};
-
#endif
#undef APPLET
#undef APPLET_NOUSAGE
#undef APPLET_ODDNAME
+#undef APPLET_NOEXEC
diff --git a/include/busybox.h b/include/busybox.h
index 9881374..6f48087 100644
--- a/include/busybox.h
+++ b/include/busybox.h
@@ -27,8 +27,15 @@ enum SUIDRoot {
struct BB_applet {
const char *name;
int (*main) (int argc, char **argv);
- __extension__ enum Location location:4;
- __extension__ enum SUIDRoot need_suid:4;
+ __extension__ enum Location location:8;
+ __extension__ enum SUIDRoot need_suid:8;
+ /* true if instead if fork(); exec("applet"); waitpid();
+ * one can do fork(); exit(applet_main(argc,argv)); waitpid(); */
+ unsigned char noexec;
+ /* Even nicer */
+ /* true if instead if fork(); exec("applet"); waitpid();
+ * one can simply call applet_main(argc,argv); */
+ unsigned char nofork;
};
/* Defined in applet.c */
diff --git a/include/libbb.h b/include/libbb.h
index 8f43aea..4fc5d18 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -662,9 +662,11 @@ const struct hwtype *get_hwntype(int type);
#ifndef BUILD_INDIVIDUAL
-extern struct BB_applet *find_applet_by_name(const char *name);
+struct BB_applet;
+extern const struct BB_applet *find_applet_by_name(const char *name);
/* Returns only if applet is not found. */
extern void run_applet_by_name(const char *name, int argc, char **argv);
+extern void run_current_applet_and_exit(int argc, char **argv) ATTRIBUTE_NORETURN;
#endif
extern int match_fstype(const struct mntent *mt, const char *fstypes);
@@ -870,6 +872,7 @@ enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */
};
#define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c")
+extern const struct BB_applet *current_applet;
extern const char *applet_name;
extern const char BB_BANNER[];
diff --git a/shell/ash.c b/shell/ash.c
index 950cdaa..f98fc41 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -6468,43 +6468,6 @@ casematch(union node *pattern, char *val)
/* ============ find_command */
-#if ENABLE_FEATURE_SH_STANDALONE_SHELL
-static int
-is_safe_applet(char *name)
-{
- /* It isn't a bug to have non-existent applet here... */
- /* ...just a waste of space... */
- static const char safe_applets[][8] = {
- "["
- USE_AWK (, "awk" )
- USE_CAT (, "cat" )
- USE_CHMOD (, "chmod" )
- USE_CHOWN (, "chown" )
- USE_CP (, "cp" )
- USE_CUT (, "cut" )
- USE_DD (, "dd" )
- USE_ECHO (, "echo" )
- USE_FIND (, "find" )
- USE_HEXDUMP(, "hexdump")
- USE_LN (, "ln" )
- USE_LS (, "ls" )
- USE_MKDIR (, "mkdir" )
- USE_RM (, "rm" )
- USE_SORT (, "sort" )
- USE_TEST (, "test" )
- USE_TOUCH (, "touch" )
- USE_XARGS (, "xargs" )
- };
- int n = sizeof(safe_applets) / sizeof(safe_applets[0]);
- int i;
- for (i = 0; i < n; i++)
- if (strcmp(safe_applets[i], name) == 0)
- return 1;
-
- return 0;
-}
-#endif
-
struct builtincmd {
const char *name;
int (*builtin)(int, char **);
@@ -6570,17 +6533,15 @@ tryexec(char *cmd, char **argv, char **envp)
#if ENABLE_FEATURE_SH_STANDALONE_SHELL
if (strchr(cmd, '/') == NULL) {
- struct BB_applet *a;
- char **c;
+ const struct BB_applet *a;
a = find_applet_by_name(cmd);
if (a) {
- if (is_safe_applet(cmd)) {
- c = argv;
- while (*c)
- c++;
- applet_name = cmd;
- exit(a->main(c - argv, argv));
+ if (a->noexec) {
+ char **c = argv;
+ while (*c) c++;
+ current_applet = a;
+ run_current_applet_and_exit(c - argv, argv);
}
/* re-exec ourselves with the new arguments */
execve(CONFIG_BUSYBOX_EXEC_PATH, argv, envp);
@@ -6608,7 +6569,7 @@ tryexec(char *cmd, char **argv, char **envp)
;
ap = new = ckmalloc((ap - argv + 2) * sizeof(char *));
ap[1] = cmd;
- *ap = cmd = (char *)DEFAULT_SHELL;
+ ap[0] = cmd = (char *)DEFAULT_SHELL;
ap += 2;
argv++;
while ((*ap++ = *argv++))
@@ -11161,12 +11122,6 @@ find_command(char *name, struct cmdentry *entry, int act, const char *path)
entry->u.index = -1;
return;
}
- /* Already caught above
- if (is_safe_applet(name)) {
- entry->cmdtype = CMDNORMAL;
- entry->u.index = -1;
- return;
- }*/
#endif
updatetbl = (path == pathval());
generated by cgit v1.1 at 2024-12-26 03:10:02 +0000