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https://github.com/sheumann/hush.git
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if only one applet is enabled, make "busybox applet [params]" work as expected
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
714e2b7e6a
commit
8f0af3b001
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@ -227,7 +227,7 @@ bool re_execed;
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IF_FEATURE_SUID(static uid_t ruid;) /* real uid */
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#if ENABLE_FEATURE_SUID_CONFIG
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# if ENABLE_FEATURE_SUID_CONFIG
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/* applets[] is const, so we have to define this "override" structure */
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static struct BB_suid_config {
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@ -498,15 +498,15 @@ static void parse_config_file(void)
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sct_head = sct;
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}
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}
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#else
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# else
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static inline void parse_config_file(void)
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{
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IF_FEATURE_SUID(ruid = getuid();)
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}
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#endif /* FEATURE_SUID_CONFIG */
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# endif /* FEATURE_SUID_CONFIG */
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#if ENABLE_FEATURE_SUID
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# if ENABLE_FEATURE_SUID
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static void check_suid(int applet_no)
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{
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gid_t rgid; /* real gid */
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@ -515,7 +515,7 @@ static void check_suid(int applet_no)
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return; /* run by root - no need to check more */
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rgid = getgid();
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#if ENABLE_FEATURE_SUID_CONFIG
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# if ENABLE_FEATURE_SUID_CONFIG
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if (suid_cfg_readable) {
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uid_t uid;
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struct BB_suid_config *sct;
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@ -558,7 +558,7 @@ static void check_suid(int applet_no)
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bb_perror_msg_and_die("setresuid");
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return;
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}
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#if !ENABLE_FEATURE_SUID_CONFIG_QUIET
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# if !ENABLE_FEATURE_SUID_CONFIG_QUIET
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{
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static bool onetime = 0;
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@ -567,9 +567,9 @@ static void check_suid(int applet_no)
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fprintf(stderr, "Using fallback suid method\n");
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}
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}
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#endif
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# endif
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check_need_suid:
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#endif
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# endif
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if (APPLET_SUID(applet_no) == _BB_SUID_REQUIRE) {
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/* Real uid is not 0. If euid isn't 0 too, suid bit
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* is most probably not set on our executable */
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@ -580,25 +580,24 @@ static void check_suid(int applet_no)
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xsetuid(ruid);
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}
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}
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#else
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#define check_suid(x) ((void)0)
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#endif /* FEATURE_SUID */
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# else
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# define check_suid(x) ((void)0)
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# endif /* FEATURE_SUID */
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#if ENABLE_FEATURE_INSTALLER
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# if ENABLE_FEATURE_INSTALLER
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static const char usr_bin [] ALIGN1 = "/usr/bin/";
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static const char usr_sbin[] ALIGN1 = "/usr/sbin/";
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static const char *const install_dir[] = {
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&usr_bin [8], /* "/" */
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&usr_bin [4], /* "/bin/" */
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&usr_sbin[4] /* "/sbin/" */
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# if !ENABLE_INSTALL_NO_USR
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# if !ENABLE_INSTALL_NO_USR
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,usr_bin
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,usr_sbin
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# endif
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# endif
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};
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/* create (sym)links for each applet */
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static void install_links(const char *busybox, int use_symbolic_links,
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char *custom_install_dir)
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@ -628,9 +627,9 @@ static void install_links(const char *busybox, int use_symbolic_links,
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free(fpc);
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}
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}
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#else
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# define install_links(x,y,z) ((void)0)
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#endif
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# else
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# define install_links(x,y,z) ((void)0)
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# endif
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/* If we were called as "busybox..." */
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static int busybox_main(char **argv)
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@ -695,10 +694,10 @@ static int busybox_main(char **argv)
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const char *a = applet_names;
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dup2(1, 2);
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while (*a) {
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#if ENABLE_FEATURE_INSTALLER
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# if ENABLE_FEATURE_INSTALLER
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if (argv[1][6]) /* --list-path? */
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full_write2_str(install_dir[APPLET_INSTALL_LOC(i)] + 1);
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#endif
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# endif
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full_write2_str(a);
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full_write2_str("\n");
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i++;
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@ -771,7 +770,7 @@ void FAST_FUNC run_applet_and_exit(const char *name, char **argv)
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int applet = find_applet_by_name(name);
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if (applet >= 0)
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run_applet_no_and_exit(applet, argv);
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if (!strncmp(name, "busybox", 7))
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if (strncmp(name, "busybox", 7) == 0)
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exit(busybox_main(argv));
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}
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@ -803,14 +802,6 @@ int main(int argc UNUSED_PARAM, char **argv)
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mallopt(M_MMAP_THRESHOLD, 8 * PAGE_SIZE - 256);
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#endif
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#if defined(SINGLE_APPLET_MAIN)
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/* Only one applet is selected by the user! */
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/* applet_names in this case is just "applet\0\0" */
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lbb_prepare(applet_names IF_FEATURE_INDIVIDUAL(, argv));
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return SINGLE_APPLET_MAIN(argc, argv);
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#else
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lbb_prepare("busybox" IF_FEATURE_INDIVIDUAL(, argv));
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#if !BB_MMU
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/* NOMMU re-exec trick sets high-order bit in first byte of name */
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if (argv[0][0] & 0x80) {
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@ -818,6 +809,19 @@ int main(int argc UNUSED_PARAM, char **argv)
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argv[0][0] &= 0x7f;
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}
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#endif
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#if defined(SINGLE_APPLET_MAIN)
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/* Only one applet is selected in .config */
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if (strncmp(argv[0], "busybox", 7) == 0) {
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/* "busybox <applet> <params>" should still work as expected */
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argv++;
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}
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/* applet_names in this case is just "applet\0\0" */
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lbb_prepare(applet_names IF_FEATURE_INDIVIDUAL(, argv));
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return SINGLE_APPLET_MAIN(argc, argv);
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#else
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lbb_prepare("busybox" IF_FEATURE_INDIVIDUAL(, argv));
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applet_name = argv[0];
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if (applet_name[0] == '-')
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applet_name++;
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