[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/libbb/appletlib.c b/ap/app/busybox/src/libbb/appletlib.c
new file mode 100644
index 0000000..67df446
--- /dev/null
+++ b/ap/app/busybox/src/libbb/appletlib.c
@@ -0,0 +1,830 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) tons of folks. Tracking down who wrote what
+ * isn't something I'm going to worry about... If you wrote something
+ * here, please feel free to acknowledge your work.
+ *
+ * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
+ * Permission has been granted to redistribute this code under GPL.
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+/* We are trying to not use printf, this benefits the case when selected
+ * applets are really simple. Example:
+ *
+ * $ ./busybox
+ * ...
+ * Currently defined functions:
+ * basename, false, true
+ *
+ * $ size busybox
+ * text data bss dec hex filename
+ * 4473 52 72 4597 11f5 busybox
+ *
+ * FEATURE_INSTALLER or FEATURE_SUID will still link printf routines in. :(
+ */
+#include "busybox.h"
+
+#if !(defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \
+ || defined(__APPLE__) \
+ )
+# include <malloc.h> /* for mallopt */
+#endif
+
+
+/* Declare <applet>_main() */
+#define PROTOTYPES
+#include "applets.h"
+#undef PROTOTYPES
+
+/* Include generated applet names, pointers to <applet>_main, etc */
+#include "applet_tables.h"
+/* ...and if applet_tables generator says we have only one applet... */
+#ifdef SINGLE_APPLET_MAIN
+# undef ENABLE_FEATURE_INDIVIDUAL
+# define ENABLE_FEATURE_INDIVIDUAL 1
+# undef IF_FEATURE_INDIVIDUAL
+# define IF_FEATURE_INDIVIDUAL(...) __VA_ARGS__
+#endif
+
+#include "usage_compressed.h"
+
+
+#if ENABLE_SHOW_USAGE && !ENABLE_FEATURE_COMPRESS_USAGE
+static const char usage_messages[] ALIGN1 = UNPACKED_USAGE;
+#else
+# define usage_messages 0
+#endif
+
+#if ENABLE_FEATURE_COMPRESS_USAGE
+
+static const char packed_usage[] ALIGN1 = { PACKED_USAGE };
+# include "bb_archive.h"
+static const char *unpack_usage_messages(void)
+{
+ char *outbuf = NULL;
+ bunzip_data *bd;
+ int i;
+
+ i = start_bunzip(&bd,
+ /* src_fd: */ -1,
+ /* inbuf: */ packed_usage,
+ /* len: */ sizeof(packed_usage));
+ /* read_bunzip can longjmp to start_bunzip, and ultimately
+ * end up here with i != 0 on read data errors! Not trivial */
+ if (!i) {
+ /* Cannot use xmalloc: will leak bd in NOFORK case! */
+ outbuf = malloc_or_warn(sizeof(UNPACKED_USAGE));
+ if (outbuf)
+ read_bunzip(bd, outbuf, sizeof(UNPACKED_USAGE));
+ }
+ dealloc_bunzip(bd);
+ return outbuf;
+}
+# define dealloc_usage_messages(s) free(s)
+
+#else
+
+# define unpack_usage_messages() usage_messages
+# define dealloc_usage_messages(s) ((void)(s))
+
+#endif /* FEATURE_COMPRESS_USAGE */
+
+
+void FAST_FUNC bb_show_usage(void)
+{
+ if (ENABLE_SHOW_USAGE) {
+#ifdef SINGLE_APPLET_STR
+ /* Imagine that this applet is "true". Dont suck in printf! */
+ const char *usage_string = unpack_usage_messages();
+
+ if (*usage_string == '\b') {
+ full_write2_str("No help available.\n\n");
+ } else {
+ full_write2_str("Usage: "SINGLE_APPLET_STR" ");
+ full_write2_str(usage_string);
+ full_write2_str("\n\n");
+ }
+ if (ENABLE_FEATURE_CLEAN_UP)
+ dealloc_usage_messages((char*)usage_string);
+#else
+ const char *p;
+ const char *usage_string = p = unpack_usage_messages();
+ int ap = find_applet_by_name(applet_name);
+
+ if (ap < 0) /* never happens, paranoia */
+ xfunc_die();
+ while (ap) {
+ while (*p++) continue;
+ ap--;
+ }
+ full_write2_str(bb_banner);
+ full_write2_str(" multi-call binary.\n");
+ if (*p == '\b')
+ full_write2_str("\nNo help available.\n\n");
+ else {
+ full_write2_str("\nUsage: ");
+ full_write2_str(applet_name);
+ full_write2_str(" ");
+ full_write2_str(p);
+ full_write2_str("\n\n");
+ }
+ if (ENABLE_FEATURE_CLEAN_UP)
+ dealloc_usage_messages((char*)usage_string);
+#endif
+ }
+ xfunc_die();
+}
+
+#if NUM_APPLETS > 8
+static int applet_name_compare(const void *name, const void *idx)
+{
+ int i = (int)(ptrdiff_t)idx - 1;
+ return strcmp(name, APPLET_NAME(i));
+}
+#endif
+int FAST_FUNC find_applet_by_name(const char *name)
+{
+#if NUM_APPLETS > 8
+ /* Do a binary search to find the applet entry given the name. */
+ const char *p;
+ p = bsearch(name, (void*)(ptrdiff_t)1, ARRAY_SIZE(applet_main), 1, applet_name_compare);
+ /*
+ * if (!p) return -1;
+ * ^^^^^^^^^^^^^^^^^^ the code below will do this if p == NULL :)
+ */
+ return (int)(ptrdiff_t)p - 1;
+#else
+ /* A version which does not pull in bsearch */
+ int i = 0;
+ const char *p = applet_names;
+ while (i < NUM_APPLETS) {
+ if (strcmp(name, p) == 0)
+ return i;
+ p += strlen(p) + 1;
+ i++;
+ }
+ return -1;
+#endif
+}
+
+
+void lbb_prepare(const char *applet
+ IF_FEATURE_INDIVIDUAL(, char **argv))
+ MAIN_EXTERNALLY_VISIBLE;
+void lbb_prepare(const char *applet
+ IF_FEATURE_INDIVIDUAL(, char **argv))
+{
+#ifdef __GLIBC__
+ (*(int **)&bb_errno) = __errno_location();
+ barrier();
+#endif
+ applet_name = applet;
+
+ /* Set locale for everybody except 'init' */
+ if (ENABLE_LOCALE_SUPPORT && getpid() != 1)
+ setlocale(LC_ALL, "");
+
+#if ENABLE_FEATURE_INDIVIDUAL
+ /* Redundant for busybox (run_applet_and_exit covers that case)
+ * but needed for "individual applet" mode */
+ if (argv[1]
+ && !argv[2]
+ && strcmp(argv[1], "--help") == 0
+ && strncmp(applet, "busybox", 7) != 0
+ ) {
+ /* Special case. POSIX says "test --help"
+ * should be no different from e.g. "test --foo". */
+ if (!ENABLE_TEST || strcmp(applet_name, "test") != 0)
+ bb_show_usage();
+ }
+#endif
+}
+
+/* The code below can well be in applets/applets.c, as it is used only
+ * for busybox binary, not "individual" binaries.
+ * However, keeping it here and linking it into libbusybox.so
+ * (together with remaining tiny applets/applets.o)
+ * makes it possible to avoid --whole-archive at link time.
+ * This makes (shared busybox) + libbusybox smaller.
+ * (--gc-sections would be even better....)
+ */
+
+const char *applet_name;
+#if !BB_MMU
+bool re_execed;
+#endif
+
+
+/* If not built as a single-applet executable... */
+#if !defined(SINGLE_APPLET_MAIN)
+
+IF_FEATURE_SUID(static uid_t ruid;) /* real uid */
+
+# if ENABLE_FEATURE_SUID_CONFIG
+
+static struct suid_config_t {
+ /* next ptr must be first: this struct needs to be llist-compatible */
+ struct suid_config_t *m_next;
+ struct bb_uidgid_t m_ugid;
+ int m_applet;
+ mode_t m_mode;
+} *suid_config;
+
+static bool suid_cfg_readable;
+
+/* check if u is member of group g */
+static int ingroup(uid_t u, gid_t g)
+{
+ struct group *grp = getgrgid(g);
+ if (grp) {
+ char **mem;
+ for (mem = grp->gr_mem; *mem; mem++) {
+ struct passwd *pwd = getpwnam(*mem);
+ if (pwd && (pwd->pw_uid == u))
+ return 1;
+ }
+ }
+ return 0;
+}
+
+/* libbb candidate */
+static char *get_trimmed_slice(char *s, char *e)
+{
+ /* First, consider the value at e to be nul and back up until we
+ * reach a non-space char. Set the char after that (possibly at
+ * the original e) to nul. */
+ while (e-- > s) {
+ if (!isspace(*e)) {
+ break;
+ }
+ }
+ e[1] = '\0';
+
+ /* Next, advance past all leading space and return a ptr to the
+ * first non-space char; possibly the terminating nul. */
+ return skip_whitespace(s);
+}
+
+static void parse_config_file(void)
+{
+ /* Don't depend on the tools to combine strings. */
+ static const char config_file[] ALIGN1 = "/etc/busybox.conf";
+
+ struct suid_config_t *sct_head;
+ int applet_no;
+ FILE *f;
+ const char *errmsg;
+ unsigned lc;
+ smallint section;
+ struct stat st;
+
+ ruid = getuid();
+ if (ruid == 0) /* run by root - don't need to even read config file */
+ return;
+
+ if ((stat(config_file, &st) != 0) /* No config file? */
+ || !S_ISREG(st.st_mode) /* Not a regular file? */
+ || (st.st_uid != 0) /* Not owned by root? */
+ || (st.st_mode & (S_IWGRP | S_IWOTH)) /* Writable by non-root? */
+ || !(f = fopen_for_read(config_file)) /* Cannot open? */
+ ) {
+ return;
+ }
+
+ suid_cfg_readable = 1;
+ sct_head = NULL;
+ section = lc = 0;
+
+ while (1) {
+ char buffer[256];
+ char *s;
+
+ if (!fgets(buffer, sizeof(buffer), f)) { /* Are we done? */
+ // Looks like bloat
+ //if (ferror(f)) { /* Make sure it wasn't a read error. */
+ // errmsg = "reading";
+ // goto pe_label;
+ //}
+ fclose(f);
+ suid_config = sct_head; /* Success, so set the pointer. */
+ return;
+ }
+
+ s = buffer;
+ lc++; /* Got a (partial) line. */
+
+ /* If a line is too long for our buffer, we consider it an error.
+ * The following test does mistreat one corner case though.
+ * If the final line of the file does not end with a newline and
+ * yet exactly fills the buffer, it will be treated as too long
+ * even though there isn't really a problem. But it isn't really
+ * worth adding code to deal with such an unlikely situation, and
+ * we do err on the side of caution. Besides, the line would be
+ * too long if it did end with a newline. */
+ if (!strchr(s, '\n') && !feof(f)) {
+ errmsg = "line too long";
+ goto pe_label;
+ }
+
+ /* Trim leading and trailing whitespace, ignoring comments, and
+ * check if the resulting string is empty. */
+ s = get_trimmed_slice(s, strchrnul(s, '#'));
+ if (!*s) {
+ continue;
+ }
+
+ /* Check for a section header. */
+
+ if (*s == '[') {
+ /* Unlike the old code, we ignore leading and trailing
+ * whitespace for the section name. We also require that
+ * there are no stray characters after the closing bracket. */
+ char *e = strchr(s, ']');
+ if (!e /* Missing right bracket? */
+ || e[1] /* Trailing characters? */
+ || !*(s = get_trimmed_slice(s+1, e)) /* Missing name? */
+ ) {
+ errmsg = "section header";
+ goto pe_label;
+ }
+ /* Right now we only have one section so just check it.
+ * If more sections are added in the future, please don't
+ * resort to cascading ifs with multiple strcasecmp calls.
+ * That kind of bloated code is all too common. A loop
+ * and a string table would be a better choice unless the
+ * number of sections is very small. */
+ if (strcasecmp(s, "SUID") == 0) {
+ section = 1;
+ continue;
+ }
+ section = -1; /* Unknown section so set to skip. */
+ continue;
+ }
+
+ /* Process sections. */
+
+ if (section == 1) { /* SUID */
+ /* Since we trimmed leading and trailing space above, we're
+ * now looking for strings of the form
+ * <key>[::space::]*=[::space::]*<value>
+ * where both key and value could contain inner whitespace. */
+
+ /* First get the key (an applet name in our case). */
+ char *e = strchr(s, '=');
+ if (e) {
+ s = get_trimmed_slice(s, e);
+ }
+ if (!e || !*s) { /* Missing '=' or empty key. */
+ errmsg = "keyword";
+ goto pe_label;
+ }
+
+ /* Ok, we have an applet name. Process the rhs if this
+ * applet is currently built in and ignore it otherwise.
+ * Note: this can hide config file bugs which only pop
+ * up when the busybox configuration is changed. */
+ applet_no = find_applet_by_name(s);
+ if (applet_no >= 0) {
+ unsigned i;
+ struct suid_config_t *sct;
+
+ /* Note: We currently don't check for duplicates!
+ * The last config line for each applet will be the
+ * one used since we insert at the head of the list.
+ * I suppose this could be considered a feature. */
+ sct = xzalloc(sizeof(*sct));
+ sct->m_applet = applet_no;
+ /*sct->m_mode = 0;*/
+ sct->m_next = sct_head;
+ sct_head = sct;
+
+ /* Get the specified mode. */
+
+ e = skip_whitespace(e+1);
+
+ for (i = 0; i < 3; i++) {
+ /* There are 4 chars for each of user/group/other.
+ * "x-xx" instead of "x-" are to make
+ * "idx > 3" check catch invalid chars.
+ */
+ static const char mode_chars[] ALIGN1 = "Ssx-" "Ssx-" "x-xx";
+ static const unsigned short mode_mask[] ALIGN2 = {
+ S_ISUID, S_ISUID|S_IXUSR, S_IXUSR, 0, /* Ssx- */
+ S_ISGID, S_ISGID|S_IXGRP, S_IXGRP, 0, /* Ssx- */
+ S_IXOTH, 0 /* x- */
+ };
+ const char *q = strchrnul(mode_chars + 4*i, *e);
+ unsigned idx = q - (mode_chars + 4*i);
+ if (idx > 3) {
+ errmsg = "mode";
+ goto pe_label;
+ }
+ sct->m_mode |= mode_mask[q - mode_chars];
+ e++;
+ }
+
+ /* Now get the user/group info. */
+
+ s = skip_whitespace(e);
+ /* Default is 0.0, else parse USER.GROUP: */
+ if (*s) {
+ /* We require whitespace between mode and USER.GROUP */
+ if ((s == e) || !(e = strchr(s, '.'))) {
+ errmsg = "uid.gid";
+ goto pe_label;
+ }
+ *e = ':'; /* get_uidgid needs USER:GROUP syntax */
+ if (get_uidgid(&sct->m_ugid, s, /*allow_numeric:*/ 1) == 0) {
+ errmsg = "unknown user/group";
+ goto pe_label;
+ }
+ }
+ }
+ continue;
+ }
+
+ /* Unknown sections are ignored. */
+
+ /* Encountering configuration lines prior to seeing a
+ * section header is treated as an error. This is how
+ * the old code worked, but it may not be desirable.
+ * We may want to simply ignore such lines in case they
+ * are used in some future version of busybox. */
+ if (!section) {
+ errmsg = "keyword outside section";
+ goto pe_label;
+ }
+
+ } /* while (1) */
+
+ pe_label:
+ fclose(f);
+ bb_error_msg("parse error in %s, line %u: %s", config_file, lc, errmsg);
+
+ /* Release any allocated memory before returning. */
+ llist_free((llist_t*)sct_head, NULL);
+}
+# else
+static inline void parse_config_file(void)
+{
+ IF_FEATURE_SUID(ruid = getuid();)
+}
+# endif /* FEATURE_SUID_CONFIG */
+
+
+# if ENABLE_FEATURE_SUID
+static void check_suid(int applet_no)
+{
+ gid_t rgid; /* real gid */
+
+ if (ruid == 0) /* set by parse_config_file() */
+ return; /* run by root - no need to check more */
+ rgid = getgid();
+
+# if ENABLE_FEATURE_SUID_CONFIG
+ if (suid_cfg_readable) {
+ uid_t uid;
+ struct suid_config_t *sct;
+ mode_t m;
+
+ for (sct = suid_config; sct; sct = sct->m_next) {
+ if (sct->m_applet == applet_no)
+ goto found;
+ }
+ goto check_need_suid;
+ found:
+ /* Is this user allowed to run this applet? */
+ m = sct->m_mode;
+ if (sct->m_ugid.uid == ruid)
+ /* same uid */
+ m >>= 6;
+ else if ((sct->m_ugid.gid == rgid) || ingroup(ruid, sct->m_ugid.gid))
+ /* same group / in group */
+ m >>= 3;
+ if (!(m & S_IXOTH)) /* is x bit not set? */
+ bb_error_msg_and_die("you have no permission to run this applet");
+
+ /* We set effective AND saved ids. If saved-id is not set
+ * like we do below, seteuid(0) can still later succeed! */
+
+ /* Are we directed to change gid
+ * (APPLET = *s* USER.GROUP or APPLET = *S* USER.GROUP)?
+ */
+ if (sct->m_mode & S_ISGID)
+ rgid = sct->m_ugid.gid;
+ /* else: we will set egid = rgid, thus dropping sgid effect */
+ if (setresgid(-1, rgid, rgid))
+ bb_perror_msg_and_die("setresgid");
+
+ /* Are we directed to change uid
+ * (APPLET = s** USER.GROUP or APPLET = S** USER.GROUP)?
+ */
+ uid = ruid;
+ if (sct->m_mode & S_ISUID)
+ uid = sct->m_ugid.uid;
+ /* else: we will set euid = ruid, thus dropping suid effect */
+ if (setresuid(-1, uid, uid))
+ bb_perror_msg_and_die("setresuid");
+
+ goto ret;
+ }
+# if !ENABLE_FEATURE_SUID_CONFIG_QUIET
+ {
+ static bool onetime = 0;
+
+ if (!onetime) {
+ onetime = 1;
+ bb_error_msg("using fallback suid method");
+ }
+ }
+# endif
+ check_need_suid:
+# endif
+ if (APPLET_SUID(applet_no) == BB_SUID_REQUIRE) {
+ /* Real uid is not 0. If euid isn't 0 too, suid bit
+ * is most probably not set on our executable */
+ if (geteuid())
+ bb_error_msg_and_die("must be suid to work properly");
+ } else if (APPLET_SUID(applet_no) == BB_SUID_DROP) {
+ xsetgid(rgid); /* drop all privileges */
+ xsetuid(ruid);
+ }
+# if ENABLE_FEATURE_SUID_CONFIG
+ ret: ;
+ llist_free((llist_t*)suid_config, NULL);
+# endif
+}
+# else
+# define check_suid(x) ((void)0)
+# endif /* FEATURE_SUID */
+
+
+# if ENABLE_FEATURE_INSTALLER
+static const char usr_bin [] ALIGN1 = "/usr/bin/";
+static const char usr_sbin[] ALIGN1 = "/usr/sbin/";
+static const char *const install_dir[] = {
+ &usr_bin [8], /* "/" */
+ &usr_bin [4], /* "/bin/" */
+ &usr_sbin[4] /* "/sbin/" */
+# if !ENABLE_INSTALL_NO_USR
+ ,usr_bin
+ ,usr_sbin
+# endif
+};
+
+/* create (sym)links for each applet */
+static void install_links(const char *busybox, int use_symbolic_links,
+ char *custom_install_dir)
+{
+ /* directory table
+ * this should be consistent w/ the enum,
+ * busybox.h::bb_install_loc_t, or else... */
+ int (*lf)(const char *, const char *);
+ char *fpc;
+ unsigned i;
+ int rc;
+
+ lf = link;
+ if (use_symbolic_links)
+ lf = symlink;
+
+ for (i = 0; i < ARRAY_SIZE(applet_main); i++) {
+ fpc = concat_path_file(
+ custom_install_dir ? custom_install_dir : install_dir[APPLET_INSTALL_LOC(i)],
+ APPLET_NAME(i));
+ // debug: bb_error_msg("%slinking %s to busybox",
+ // use_symbolic_links ? "sym" : "", fpc);
+ rc = lf(busybox, fpc);
+ if (rc != 0 && errno != EEXIST) {
+ bb_simple_perror_msg(fpc);
+ }
+ free(fpc);
+ }
+}
+# else
+# define install_links(x,y,z) ((void)0)
+# endif
+
+/* If we were called as "busybox..." */
+static int busybox_main(char **argv)
+{
+ if (!argv[1]) {
+ /* Called without arguments */
+ const char *a;
+ int col;
+ unsigned output_width;
+ help:
+ output_width = 80;
+ if (ENABLE_FEATURE_AUTOWIDTH) {
+ /* Obtain the terminal width */
+ get_terminal_width_height(0, &output_width, NULL);
+ }
+
+ dup2(1, 2);
+ full_write2_str(bb_banner); /* reuse const string */
+ full_write2_str(" multi-call binary.\n"); /* reuse */
+ full_write2_str(
+ "BusyBox is copyrighted by many authors between 1998-2012.\n"
+ "Licensed under GPLv2. See source distribution for detailed\n"
+ "copyright notices.\n"
+ "\n"
+ "Usage: busybox [function [arguments]...]\n"
+ " or: busybox --list"IF_FEATURE_INSTALLER("[-full]")"\n"
+ IF_FEATURE_INSTALLER(
+ " or: busybox --install [-s] [DIR]\n"
+ )
+ " or: function [arguments]...\n"
+ "\n"
+ "\tBusyBox is a multi-call binary that combines many common Unix\n"
+ "\tutilities into a single executable. Most people will create a\n"
+ "\tlink to busybox for each function they wish to use and BusyBox\n"
+ "\twill act like whatever it was invoked as.\n"
+ "\n"
+ "Currently defined functions:\n"
+ );
+ col = 0;
+ a = applet_names;
+ /* prevent last comma to be in the very last pos */
+ output_width--;
+ while (*a) {
+ int len2 = strlen(a) + 2;
+ if (col >= (int)output_width - len2) {
+ full_write2_str(",\n");
+ col = 0;
+ }
+ if (col == 0) {
+ col = 6;
+ full_write2_str("\t");
+ } else {
+ full_write2_str(", ");
+ }
+ full_write2_str(a);
+ col += len2;
+ a += len2 - 1;
+ }
+ full_write2_str("\n\n");
+ return 0;
+ }
+
+ if (strncmp(argv[1], "--list", 6) == 0) {
+ unsigned i = 0;
+ const char *a = applet_names;
+ dup2(1, 2);
+ while (*a) {
+# if ENABLE_FEATURE_INSTALLER
+ if (argv[1][6]) /* --list-full? */
+ full_write2_str(install_dir[APPLET_INSTALL_LOC(i)] + 1);
+# endif
+ full_write2_str(a);
+ full_write2_str("\n");
+ i++;
+ a += strlen(a) + 1;
+ }
+ return 0;
+ }
+
+ if (ENABLE_FEATURE_INSTALLER && strcmp(argv[1], "--install") == 0) {
+ int use_symbolic_links;
+ const char *busybox;
+
+ busybox = xmalloc_readlink(bb_busybox_exec_path);
+ if (!busybox) {
+ /* bb_busybox_exec_path is usually "/proc/self/exe".
+ * In chroot, readlink("/proc/self/exe") usually fails.
+ * In such case, better use argv[0] as symlink target
+ * if it is a full path name.
+ */
+ if (argv[0][0] != '/')
+ bb_error_msg_and_die("'%s' is not an absolute path", argv[0]);
+ busybox = argv[0];
+ }
+ /* busybox --install [-s] [DIR]:
+ * -s: make symlinks
+ * DIR: directory to install links to
+ */
+ use_symbolic_links = (argv[2] && strcmp(argv[2], "-s") == 0 && ++argv);
+ install_links(busybox, use_symbolic_links, argv[2]);
+ return 0;
+ }
+
+ if (strcmp(argv[1], "--help") == 0) {
+ /* "busybox --help [<applet>]" */
+ if (!argv[2])
+ goto help;
+ /* convert to "<applet> --help" */
+ argv[0] = argv[2];
+ argv[2] = NULL;
+ } else {
+ /* "busybox <applet> arg1 arg2 ..." */
+ argv++;
+ }
+ /* We support "busybox /a/path/to/applet args..." too. Allows for
+ * "#!/bin/busybox"-style wrappers */
+ applet_name = bb_get_last_path_component_nostrip(argv[0]);
+ run_applet_and_exit(applet_name, argv);
+
+ /*bb_error_msg_and_die("applet not found"); - sucks in printf */
+ full_write2_str(applet_name);
+ full_write2_str(": applet not found\n");
+ xfunc_die();
+}
+
+void FAST_FUNC run_applet_no_and_exit(int applet_no, char **argv)
+{
+ int argc = 1;
+
+ while (argv[argc])
+ argc++;
+
+ /* Reinit some shared global data */
+ xfunc_error_retval = EXIT_FAILURE;
+
+ applet_name = APPLET_NAME(applet_no);
+ if (argc == 2 && strcmp(argv[1], "--help") == 0) {
+ /* Special case. POSIX says "test --help"
+ * should be no different from e.g. "test --foo". */
+//TODO: just compare applet_no with APPLET_NO_test
+ if (!ENABLE_TEST || strcmp(applet_name, "test") != 0) {
+ /* If you want "foo --help" to return 0: */
+ /*xfunc_error_retval = 0;*/
+ bb_show_usage();
+ }
+ }
+ if (ENABLE_FEATURE_SUID)
+ check_suid(applet_no);
+ exit(applet_main[applet_no](argc, argv));
+}
+
+void FAST_FUNC run_applet_and_exit(const char *name, char **argv)
+{
+ int applet = find_applet_by_name(name);
+ if (applet >= 0)
+ run_applet_no_and_exit(applet, argv);
+ if (strncmp(name, "busybox", 7) == 0)
+ exit(busybox_main(argv));
+}
+
+#endif /* !defined(SINGLE_APPLET_MAIN) */
+
+
+
+#if ENABLE_BUILD_LIBBUSYBOX
+int lbb_main(char **argv)
+#else
+int main(int argc UNUSED_PARAM, char **argv)
+#endif
+{
+ /* Tweak malloc for reduced memory consumption */
+#ifdef M_TRIM_THRESHOLD
+ /* M_TRIM_THRESHOLD is the maximum amount of freed top-most memory
+ * to keep before releasing to the OS
+ * Default is way too big: 256k
+ */
+ mallopt(M_TRIM_THRESHOLD, 8 * 1024);
+#endif
+#ifdef M_MMAP_THRESHOLD
+ /* M_MMAP_THRESHOLD is the request size threshold for using mmap()
+ * Default is too big: 256k
+ */
+ mallopt(M_MMAP_THRESHOLD, 32 * 1024 - 256);
+#endif
+
+#if !BB_MMU
+ /* NOMMU re-exec trick sets high-order bit in first byte of name */
+ if (argv[0][0] & 0x80) {
+ re_execed = 1;
+ argv[0][0] &= 0x7f;
+ }
+#endif
+
+#if defined(SINGLE_APPLET_MAIN)
+ /* Only one applet is selected in .config */
+ if (argv[1] && strncmp(argv[0], "busybox", 7) == 0) {
+ /* "busybox <applet> <params>" should still work as expected */
+ argv++;
+ }
+ /* applet_names in this case is just "applet\0\0" */
+ lbb_prepare(applet_names IF_FEATURE_INDIVIDUAL(, argv));
+ return SINGLE_APPLET_MAIN(argc, argv);
+#else
+ lbb_prepare("busybox" IF_FEATURE_INDIVIDUAL(, argv));
+
+ applet_name = argv[0];
+ if (applet_name[0] == '-')
+ applet_name++;
+ applet_name = bb_basename(applet_name);
+
+ parse_config_file(); /* ...maybe, if FEATURE_SUID_CONFIG */
+
+ run_applet_and_exit(applet_name, argv);
+
+ /*bb_error_msg_and_die("applet not found"); - sucks in printf */
+ full_write2_str(applet_name);
+ full_write2_str(": applet not found\n");
+ xfunc_die();
+#endif
+}