X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=findutils%2Ffind.c;h=0596c005929cda2e5bfc85a2bf01e355a37c1fb1;hb=3532e60ca890979030949793933442afaec272fb;hp=60b2a75aab9bc7f9c44f4d58d80b5e84a51e1f42;hpb=319f8ebef8a9e48cb74b220d4585552928549266;p=oweals%2Fbusybox.git diff --git a/findutils/find.c b/findutils/find.c index 60b2a75aa..0596c0059 100644 --- a/findutils/find.c +++ b/findutils/find.c @@ -7,7 +7,7 @@ * Reworked by David Douthitt and * Matt Kraai . * - * Licensed under the GPL version 2, see the file LICENSE in this tarball. + * Licensed under GPLv2, see file LICENSE in this source tree. */ /* findutils-4.1.20: @@ -53,19 +53,301 @@ * diff -u /tmp/std_find /tmp/bb_find && echo Identical */ +//config:config FIND +//config: bool "find" +//config: default y +//config: help +//config: find is used to search your system to find specified files. +//config: +//config:config FEATURE_FIND_PRINT0 +//config: bool "Enable -print0: NUL-terminated output" +//config: default y +//config: depends on FIND +//config: help +//config: Causes output names to be separated by a NUL character +//config: rather than a newline. This allows names that contain +//config: newlines and other whitespace to be more easily +//config: interpreted by other programs. +//config: +//config:config FEATURE_FIND_MTIME +//config: bool "Enable -mtime: modified time matching" +//config: default y +//config: depends on FIND +//config: help +//config: Allow searching based on the modification time of +//config: files, in days. +//config: +//config:config FEATURE_FIND_MMIN +//config: bool "Enable -mmin: modified time matching by minutes" +//config: default y +//config: depends on FIND +//config: help +//config: Allow searching based on the modification time of +//config: files, in minutes. +//config: +//config:config FEATURE_FIND_PERM +//config: bool "Enable -perm: permissions matching" +//config: default y +//config: depends on FIND +//config: +//config:config FEATURE_FIND_TYPE +//config: bool "Enable -type: file type matching (file/dir/link/...)" +//config: default y +//config: depends on FIND +//config: help +//config: Enable searching based on file type (file, +//config: directory, socket, device, etc.). +//config: +//config:config FEATURE_FIND_XDEV +//config: bool "Enable -xdev: 'stay in filesystem'" +//config: default y +//config: depends on FIND +//config: +//config:config FEATURE_FIND_MAXDEPTH +//config: bool "Enable -mindepth N and -maxdepth N" +//config: default y +//config: depends on FIND +//config: +//config:config FEATURE_FIND_NEWER +//config: bool "Enable -newer: compare file modification times" +//config: default y +//config: depends on FIND +//config: help +//config: Support the 'find -newer' option for finding any files which have +//config: modification time that is more recent than the specified FILE. +//config: +//config:config FEATURE_FIND_INUM +//config: bool "Enable -inum: inode number matching" +//config: default y +//config: depends on FIND +//config: +//config:config FEATURE_FIND_EXEC +//config: bool "Enable -exec: execute commands" +//config: default y +//config: depends on FIND +//config: help +//config: Support the 'find -exec' option for executing commands based upon +//config: the files matched. +//config: +//config:config FEATURE_FIND_EXEC_PLUS +//config: bool "Enable -exec ... {} +" +//config: default y +//config: depends on FEATURE_FIND_EXEC +//config: help +//config: Support the 'find -exec ... {} +' option for executing commands +//config: for all matched files at once. +//config: Without this option, -exec + is a synonym for -exec ; +//config: (IOW: it works correctly, but without expected speedup) +//config: +//config:config FEATURE_FIND_USER +//config: bool "Enable -user: username/uid matching" +//config: default y +//config: depends on FIND +//config: +//config:config FEATURE_FIND_GROUP +//config: bool "Enable -group: group/gid matching" +//config: default y +//config: depends on FIND +//config: +//config:config FEATURE_FIND_NOT +//config: bool "Enable the 'not' (!) operator" +//config: default y +//config: depends on FIND +//config: help +//config: Support the '!' operator to invert the test results. +//config: If 'Enable full-blown desktop' is enabled, then will also support +//config: the non-POSIX notation '-not'. +//config: +//config:config FEATURE_FIND_DEPTH +//config: bool "Enable -depth" +//config: default y +//config: depends on FIND +//config: help +//config: Process each directory's contents before the directory itself. +//config: +//config:config FEATURE_FIND_PAREN +//config: bool "Enable parens in options" +//config: default y +//config: depends on FIND +//config: help +//config: Enable usage of parens '(' to specify logical order of arguments. +//config: +//config:config FEATURE_FIND_SIZE +//config: bool "Enable -size: file size matching" +//config: default y +//config: depends on FIND +//config: +//config:config FEATURE_FIND_PRUNE +//config: bool "Enable -prune: exclude subdirectories" +//config: default y +//config: depends on FIND +//config: help +//config: If the file is a directory, don't descend into it. Useful for +//config: exclusion .svn and CVS directories. +//config: +//config:config FEATURE_FIND_DELETE +//config: bool "Enable -delete: delete files/dirs" +//config: default y +//config: depends on FIND && FEATURE_FIND_DEPTH +//config: help +//config: Support the 'find -delete' option for deleting files and directories. +//config: WARNING: This option can do much harm if used wrong. Busybox will not +//config: try to protect the user from doing stupid things. Use with care. +//config: +//config:config FEATURE_FIND_PATH +//config: bool "Enable -path: match pathname with shell pattern" +//config: default y +//config: depends on FIND +//config: help +//config: The -path option matches whole pathname instead of just filename. +//config: +//config:config FEATURE_FIND_REGEX +//config: bool "Enable -regex: match pathname with regex" +//config: default y +//config: depends on FIND +//config: help +//config: The -regex option matches whole pathname against regular expression. +//config: +//config:config FEATURE_FIND_CONTEXT +//config: bool "Enable -context: security context matching" +//config: default n +//config: depends on FIND && SELINUX +//config: help +//config: Support the 'find -context' option for matching security context. +//config: +//config:config FEATURE_FIND_LINKS +//config: bool "Enable -links: link count matching" +//config: default y +//config: depends on FIND +//config: help +//config: Support the 'find -links' option for matching number of links. + +//applet:IF_FIND(APPLET_NOEXEC(find, find, BB_DIR_USR_BIN, BB_SUID_DROP, find)) + +//kbuild:lib-$(CONFIG_FIND) += find.o + +//usage:#define find_trivial_usage +//usage: "[-HL] [PATH]... [OPTIONS] [ACTIONS]" +//usage:#define find_full_usage "\n\n" +//usage: "Search for files and perform actions on them.\n" +//usage: "First failed action stops processing of current file.\n" +//usage: "Defaults: PATH is current directory, action is '-print'\n" +//usage: "\n -L,-follow Follow symlinks" +//usage: "\n -H ...on command line only" +//usage: IF_FEATURE_FIND_XDEV( +//usage: "\n -xdev Don't descend directories on other filesystems" +//usage: ) +//usage: IF_FEATURE_FIND_MAXDEPTH( +//usage: "\n -maxdepth N Descend at most N levels. -maxdepth 0 applies" +//usage: "\n actions to command line arguments only" +//usage: "\n -mindepth N Don't act on first N levels" +//usage: ) +//usage: IF_FEATURE_FIND_DEPTH( +//usage: "\n -depth Act on directory *after* traversing it" +//usage: ) +//usage: "\n" +//usage: "\nActions:" +//usage: IF_FEATURE_FIND_PAREN( +//usage: "\n ( ACTIONS ) Group actions for -o / -a" +//usage: ) +//usage: IF_FEATURE_FIND_NOT( +//usage: "\n ! ACT Invert ACT's success/failure" +//usage: ) +//usage: "\n ACT1 [-a] ACT2 If ACT1 fails, stop, else do ACT2" +//usage: "\n ACT1 -o ACT2 If ACT1 succeeds, stop, else do ACT2" +//usage: "\n Note: -a has higher priority than -o" +//usage: "\n -name PATTERN Match file name (w/o directory name) to PATTERN" +//usage: "\n -iname PATTERN Case insensitive -name" +//usage: IF_FEATURE_FIND_PATH( +//usage: "\n -path PATTERN Match path to PATTERN" +//usage: "\n -ipath PATTERN Case insensitive -path" +//usage: ) +//usage: IF_FEATURE_FIND_REGEX( +//usage: "\n -regex PATTERN Match path to regex PATTERN" +//usage: ) +//usage: IF_FEATURE_FIND_TYPE( +//usage: "\n -type X File type is X (one of: f,d,l,b,c,...)" +//usage: ) +//usage: IF_FEATURE_FIND_PERM( +//usage: "\n -perm MASK At least one mask bit (+MASK), all bits (-MASK)," +//usage: "\n or exactly MASK bits are set in file's mode" +//usage: ) +//usage: IF_FEATURE_FIND_MTIME( +//usage: "\n -mtime DAYS mtime is greater than (+N), less than (-N)," +//usage: "\n or exactly N days in the past" +//usage: ) +//usage: IF_FEATURE_FIND_MMIN( +//usage: "\n -mmin MINS mtime is greater than (+N), less than (-N)," +//usage: "\n or exactly N minutes in the past" +//usage: ) +//usage: IF_FEATURE_FIND_NEWER( +//usage: "\n -newer FILE mtime is more recent than FILE's" +//usage: ) +//usage: IF_FEATURE_FIND_INUM( +//usage: "\n -inum N File has inode number N" +//usage: ) +//usage: IF_FEATURE_FIND_USER( +//usage: "\n -user NAME/ID File is owned by given user" +//usage: ) +//usage: IF_FEATURE_FIND_GROUP( +//usage: "\n -group NAME/ID File is owned by given group" +//usage: ) +//usage: IF_FEATURE_FIND_SIZE( +//usage: "\n -size N[bck] File size is N (c:bytes,k:kbytes,b:512 bytes(def.))" +//usage: "\n +/-N: file size is bigger/smaller than N" +//usage: ) +//usage: IF_FEATURE_FIND_LINKS( +//usage: "\n -links N Number of links is greater than (+N), less than (-N)," +//usage: "\n or exactly N" +//usage: ) +//usage: IF_FEATURE_FIND_CONTEXT( +//usage: "\n -context CTX File has specified security context" +//usage: ) +//usage: IF_FEATURE_FIND_PRUNE( +//usage: "\n -prune If current file is directory, don't descend into it" +//usage: ) +//usage: "\nIf none of the following actions is specified, -print is assumed" +//usage: "\n -print Print file name" +//usage: IF_FEATURE_FIND_PRINT0( +//usage: "\n -print0 Print file name, NUL terminated" +//usage: ) +//usage: IF_FEATURE_FIND_EXEC( +//usage: "\n -exec CMD ARG ; Run CMD with all instances of {} replaced by" +//usage: "\n file name. Fails if CMD exits with nonzero" +//usage: ) +//usage: IF_FEATURE_FIND_EXEC_PLUS( +//usage: "\n -exec CMD ARG + Run CMD with {} replaced by list of file names" +//usage: ) +//usage: IF_FEATURE_FIND_DELETE( +//usage: "\n -delete Delete current file/directory. Turns on -depth option" +//usage: ) +//usage: +//usage:#define find_example_usage +//usage: "$ find / -name passwd\n" +//usage: "/etc/passwd\n" + #include #include "libbb.h" +#include "common_bufsiz.h" #if ENABLE_FEATURE_FIND_REGEX -#include "xregex.h" +# include "xregex.h" +#endif +/* GNUism: */ +#ifndef FNM_CASEFOLD +# define FNM_CASEFOLD 0 #endif -/* This is a NOEXEC applet. Be very careful! */ +#if 1 +# define dbg(...) ((void)0) +#else +# define dbg(...) bb_error_msg(__VA_ARGS__) +#endif -USE_FEATURE_FIND_XDEV(static dev_t *xdev_dev;) -USE_FEATURE_FIND_XDEV(static int xdev_count;) +/* This is a NOEXEC applet. Be very careful! */ + -typedef int (*action_fp)(const char *fileName, struct stat *statbuf, void *); +typedef int (*action_fp)(const char *fileName, const struct stat *statbuf, void *) FAST_FUNC; typedef struct { action_fp f; @@ -73,68 +355,77 @@ typedef struct { bool invert; #endif } action; -#define ACTS(name, arg...) typedef struct { action a; arg; } action_##name; -#define ACTF(name) static int func_##name(const char *fileName, struct stat *statbuf, action_##name* ap) - ACTS(print) - ACTS(name, const char *pattern;) -USE_FEATURE_FIND_PATH( ACTS(path, const char *pattern;)) -USE_FEATURE_FIND_REGEX( ACTS(regex, regex_t compiled_pattern;)) -USE_FEATURE_FIND_PRINT0( ACTS(print0)) -USE_FEATURE_FIND_TYPE( ACTS(type, int type_mask;)) -USE_FEATURE_FIND_PERM( ACTS(perm, char perm_char; mode_t perm_mask;)) -USE_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;)) -USE_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;)) -USE_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;)) -USE_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;)) -USE_FEATURE_FIND_USER( ACTS(user, uid_t uid;)) -USE_FEATURE_FIND_SIZE( ACTS(size, char size_char; off_t size;)) -USE_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;)) -USE_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;)) -USE_FEATURE_FIND_PRUNE( ACTS(prune)) -USE_FEATURE_FIND_DELETE( ACTS(delete)) -USE_FEATURE_FIND_EXEC( ACTS(exec, char **exec_argv; unsigned *subst_count; int exec_argc;)) -USE_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;)) - -static action ***actions; -static bool need_print = 1; -static int recurse_flags = ACTION_RECURSE; -#if ENABLE_FEATURE_FIND_EXEC -static unsigned count_subst(const char *str) -{ - unsigned count = 0; - while ((str = strstr(str, "{}")) != NULL) { - count++; - str++; - } - return count; -} +#define ACTS(name, ...) typedef struct { action a; __VA_ARGS__ } action_##name; +#define ACTF(name) \ + static int FAST_FUNC func_##name(const char *fileName UNUSED_PARAM, \ + const struct stat *statbuf UNUSED_PARAM, \ + action_##name* ap UNUSED_PARAM) + ACTS(print) + ACTS(name, const char *pattern; bool iname;) +IF_FEATURE_FIND_PATH( ACTS(path, const char *pattern; bool ipath;)) +IF_FEATURE_FIND_REGEX( ACTS(regex, regex_t compiled_pattern;)) +IF_FEATURE_FIND_PRINT0( ACTS(print0)) +IF_FEATURE_FIND_TYPE( ACTS(type, int type_mask;)) +IF_FEATURE_FIND_PERM( ACTS(perm, char perm_char; mode_t perm_mask;)) +IF_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;)) +IF_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;)) +IF_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;)) +IF_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;)) +IF_FEATURE_FIND_USER( ACTS(user, uid_t uid;)) +IF_FEATURE_FIND_SIZE( ACTS(size, char size_char; off_t size;)) +IF_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;)) +IF_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;)) +IF_FEATURE_FIND_PRUNE( ACTS(prune)) +IF_FEATURE_FIND_DELETE( ACTS(delete)) +IF_FEATURE_FIND_EXEC( ACTS(exec, + char **exec_argv; /* -exec ARGS */ + unsigned *subst_count; + int exec_argc; /* count of ARGS */ + IF_FEATURE_FIND_EXEC_PLUS( + /* + * filelist is NULL if "exec ;" + * non-NULL if "exec +" + */ + char **filelist; + int filelist_idx; + int file_len; + ) + )) +IF_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;)) +IF_FEATURE_FIND_LINKS( ACTS(links, char links_char; int links_count;)) -static char* subst(const char *src, unsigned count, const char* filename) -{ - char *buf, *dst, *end; - size_t flen = strlen(filename); - /* we replace each '{}' with filename: growth by strlen-2 */ - buf = dst = xmalloc(strlen(src) + count*(flen-2) + 1); - while ((end = strstr(src, "{}"))) { - memcpy(dst, src, end - src); - dst += end - src; - src = end + 2; - memcpy(dst, filename, flen); - dst += flen; - } - strcpy(dst, src); - return buf; -} +struct globals { + IF_FEATURE_FIND_XDEV(dev_t *xdev_dev;) + IF_FEATURE_FIND_XDEV(int xdev_count;) +#if ENABLE_FEATURE_FIND_MAXDEPTH + int minmaxdepth[2]; #endif + action ***actions; + smallint need_print; + smallint xdev_on; + recurse_flags_t recurse_flags; + IF_FEATURE_FIND_EXEC_PLUS(unsigned max_argv_len;) +} FIX_ALIASING; +#define G (*(struct globals*)bb_common_bufsiz1) +#define INIT_G() do { \ + setup_common_bufsiz(); \ + BUILD_BUG_ON(sizeof(G) > COMMON_BUFSIZE); \ + /* we have to zero it out because of NOEXEC */ \ + memset(&G, 0, sizeof(G)); \ + IF_FEATURE_FIND_MAXDEPTH(G.minmaxdepth[1] = INT_MAX;) \ + IF_FEATURE_FIND_EXEC_PLUS(G.max_argv_len = bb_arg_max() - 2048;) \ + G.need_print = 1; \ + G.recurse_flags = ACTION_RECURSE; \ +} while (0) /* Return values of ACTFs ('action functions') are a bit mask: * bit 1=1: prune (use SKIP constant for setting it) * bit 0=1: matched successfully (TRUE) */ -static int exec_actions(action ***appp, const char *fileName, struct stat *statbuf) +static int exec_actions(action ***appp, const char *fileName, const struct stat *statbuf) { int cur_group; int cur_action; @@ -159,7 +450,7 @@ static int exec_actions(action ***appp, const char *fileName, struct stat *statb * On return, bit is restored. */ cur_group = -1; - while ((app = appp[++cur_group])) { + while ((app = appp[++cur_group]) != NULL) { rc &= ~TRUE; /* 'success' so far, clear TRUE bit */ cur_action = -1; while (1) { @@ -170,30 +461,93 @@ static int exec_actions(action ***appp, const char *fileName, struct stat *statb #if ENABLE_FEATURE_FIND_NOT if (ap->invert) rc ^= TRUE; #endif + dbg("grp %d action %d rc:0x%x", cur_group, cur_action, rc); if (rc & TRUE) /* current group failed, try next */ break; } } + dbg("returning:0x%x", rc ^ TRUE); return rc ^ TRUE; /* restore TRUE bit */ } +#if !FNM_CASEFOLD +static char *strcpy_upcase(char *dst, const char *src) +{ + char *d = dst; + while (1) { + unsigned char ch = *src++; + if (ch >= 'a' && ch <= 'z') + ch -= ('a' - 'A'); + *d++ = ch; + if (ch == '\0') + break; + } + return dst; +} +#endif ACTF(name) { + int r; const char *tmp = bb_basename(fileName); - if (tmp != fileName && !*tmp) { /* "foo/bar/". Oh no... go back to 'b' */ - tmp--; - while (tmp != fileName && *--tmp != '/') - continue; - if (*tmp == '/') - tmp++; + /* GNU findutils: find DIR/ -name DIR + * prints "DIR/" (DIR// prints "DIR//" etc). + * Need to strip trailing "/". + * Such names can come only from top-level names, but + * we can't do this before recursive_action() call, + * since then "find FILE/ -name FILE" + * would also work (on non-directories), which is wrong. + */ + char *trunc_slash = NULL; + + if (*tmp == '\0') { + /* "foo/bar/[//...]" */ + while (tmp != fileName && tmp[-1] == '/') + tmp--; + if (tmp == fileName) { /* entire fileName is "//.."? */ + /* yes, convert "//..." to "/" + * Testcases: + * find / -maxdepth 1 -name /: prints / + * find // -maxdepth 1 -name /: prints // + * find / -maxdepth 1 -name //: prints nothing + * find // -maxdepth 1 -name //: prints nothing + */ + if (tmp[1]) + trunc_slash = (char*)tmp + 1; + } else { + /* no, it's "foo/bar/[//...]", go back to 'b' */ + trunc_slash = (char*)tmp; + while (tmp != fileName && tmp[-1] != '/') + tmp--; + } } - return fnmatch(ap->pattern, tmp, FNM_PERIOD) == 0; + + /* Was using FNM_PERIOD flag too, + * but somewhere between 4.1.20 and 4.4.0 GNU find stopped using it. + * find -name '*foo' should match .foo too: + */ + if (trunc_slash) *trunc_slash = '\0'; +#if FNM_CASEFOLD + r = fnmatch(ap->pattern, tmp, (ap->iname ? FNM_CASEFOLD : 0)); +#else + if (ap->iname) + tmp = strcpy_upcase(alloca(strlen(tmp) + 1), tmp); + r = fnmatch(ap->pattern, tmp, 0); +#endif + if (trunc_slash) *trunc_slash = '/'; + return r == 0; } + #if ENABLE_FEATURE_FIND_PATH ACTF(path) { +# if FNM_CASEFOLD + return fnmatch(ap->pattern, fileName, (ap->ipath ? FNM_CASEFOLD : 0)) == 0; +# else + if (ap->ipath) + fileName = strcpy_upcase(alloca(strlen(fileName) + 1), fileName); return fnmatch(ap->pattern, fileName, 0) == 0; +# endif } #endif #if ENABLE_FEATURE_FIND_REGEX @@ -218,8 +572,8 @@ ACTF(type) #if ENABLE_FEATURE_FIND_PERM ACTF(perm) { - /* -perm +mode: at least one of perm_mask bits are set */ - if (ap->perm_char == '+') + /* -perm [+/]mode: at least one of perm_mask bits are set */ + if (ap->perm_char == '+' || ap->perm_char == '/') return (statbuf->st_mode & ap->perm_mask) != 0; /* -perm -mode: all of perm_mask are set */ if (ap->perm_char == '-') @@ -267,23 +621,109 @@ ACTF(inum) } #endif #if ENABLE_FEATURE_FIND_EXEC -ACTF(exec) +static int do_exec(action_exec *ap, const char *fileName) { int i, rc; - char *argv[ap->exec_argc + 1]; - for (i = 0; i < ap->exec_argc; i++) - argv[i] = subst(ap->exec_argv[i], ap->subst_count[i], fileName); - argv[i] = NULL; /* terminate the list */ +# if ENABLE_FEATURE_FIND_EXEC_PLUS + int size = ap->exec_argc + ap->filelist_idx + 1; +# else + int size = ap->exec_argc + 1; +# endif +# if ENABLE_USE_PORTABLE_CODE + char **argv = alloca(sizeof(char*) * size); +# else /* gcc 4.3.1 generates smaller code: */ + char *argv[size]; +# endif + char **pp = argv; + + for (i = 0; i < ap->exec_argc; i++) { + const char *arg = ap->exec_argv[i]; + +# if ENABLE_FEATURE_FIND_EXEC_PLUS + if (ap->filelist) { + /* Handling "-exec +" + * Only one exec_argv[i] has substitution in it. + * Expand that one exec_argv[i] into file list. + */ + if (ap->subst_count[i] == 0) { + *pp++ = xstrdup(arg); + } else { + int j = 0; + while (ap->filelist[j]) { + /* 2nd arg here should be ap->subst_count[i], but it is always 1: */ + *pp++ = xmalloc_substitute_string(arg, 1, "{}", ap->filelist[j]); + free(ap->filelist[j]); + j++; + } + } + } else +# endif + { + /* Handling "-exec ;" */ + *pp++ = xmalloc_substitute_string(arg, ap->subst_count[i], "{}", fileName); + } + } + *pp = NULL; /* terminate the list */ + +# if ENABLE_FEATURE_FIND_EXEC_PLUS + if (ap->filelist) { + ap->filelist[0] = NULL; + ap->filelist_idx = 0; + ap->file_len = 0; + } +# endif rc = spawn_and_wait(argv); if (rc < 0) - bb_perror_msg("%s", argv[0]); + bb_simple_perror_msg(argv[0]); i = 0; while (argv[i]) free(argv[i++]); return rc == 0; /* return 1 if exitcode 0 */ } +ACTF(exec) +{ +# if ENABLE_FEATURE_FIND_EXEC_PLUS + if (ap->filelist) { + int rc; + + ap->filelist = xrealloc_vector(ap->filelist, 8, ap->filelist_idx); + ap->filelist[ap->filelist_idx++] = xstrdup(fileName); + ap->file_len += strlen(fileName) + sizeof(char*) + 1; + /* If we have lots of files already, exec the command */ + rc = 1; + if (ap->file_len >= G.max_argv_len) + rc = do_exec(ap, NULL); + return rc; + } +# endif + return do_exec(ap, fileName); +} +# if ENABLE_FEATURE_FIND_EXEC_PLUS +static int flush_exec_plus(void) +{ + action *ap; + action **app; + action ***appp = G.actions; + while ((app = *appp++) != NULL) { + while ((ap = *app++) != NULL) { + if (ap->f == (action_fp)func_exec) { + action_exec *ae = (void*)ap; + if (ae->filelist_idx != 0) { + int rc = do_exec(ae, NULL); +# if ENABLE_FEATURE_FIND_NOT + if (ap->invert) rc = !rc; +# endif + if (rc == 0) + return 1; + } + } + } + } + return 0; +} +# endif #endif #if ENABLE_FEATURE_FIND_USER ACTF(user) @@ -342,12 +782,15 @@ ACTF(delete) { int rc; if (S_ISDIR(statbuf->st_mode)) { - rc = rmdir(fileName); + /* "find . -delete" skips rmdir(".") */ + rc = 0; + if (NOT_LONE_CHAR(fileName, '.')) + rc = rmdir(fileName); } else { rc = unlink(fileName); } if (rc < 0) - bb_perror_msg("%s", fileName); + bb_simple_perror_msg(fileName); return TRUE; } #endif @@ -357,7 +800,7 @@ ACTF(context) security_context_t con; int rc; - if (recurse_flags & ACTION_FOLLOWLINKS) { + if (G.recurse_flags & ACTION_FOLLOWLINKS) { rc = getfilecon(fileName, &con); } else { rc = lgetfilecon(fileName, &con); @@ -369,32 +812,68 @@ ACTF(context) return rc == 0; } #endif - - -static int fileAction(const char *fileName, struct stat *statbuf, void *userData, int depth) +#if ENABLE_FEATURE_FIND_LINKS +ACTF(links) { - int i; -#if ENABLE_FEATURE_FIND_MAXDEPTH - int maxdepth = (int)(ptrdiff_t)userData; - - if (depth > maxdepth) return SKIP; + switch(ap->links_char) { + case '-' : return (statbuf->st_nlink < ap->links_count); + case '+' : return (statbuf->st_nlink > ap->links_count); + default: return (statbuf->st_nlink == ap->links_count); + } +} #endif +static int FAST_FUNC fileAction(const char *fileName, + struct stat *statbuf, + void *userData UNUSED_PARAM, + int depth IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM)) +{ + int r; + int same_fs = 1; + #if ENABLE_FEATURE_FIND_XDEV - if (S_ISDIR(statbuf->st_mode) && xdev_count) { - for (i = 0; i < xdev_count; i++) { - if (xdev_dev[i] != statbuf->st_dev) - return SKIP; + if (S_ISDIR(statbuf->st_mode) && G.xdev_count) { + int i; + for (i = 0; i < G.xdev_count; i++) { + if (G.xdev_dev[i] == statbuf->st_dev) + goto found; } + //bb_error_msg("'%s': not same fs", fileName); + same_fs = 0; + found: ; } #endif - i = exec_actions(actions, fileName, statbuf); + +#if ENABLE_FEATURE_FIND_MAXDEPTH + if (depth < G.minmaxdepth[0]) { + if (same_fs) + return TRUE; /* skip this, continue recursing */ + return SKIP; /* stop recursing */ + } + if (depth > G.minmaxdepth[1]) + return SKIP; /* stop recursing */ +#endif + + r = exec_actions(G.actions, fileName, statbuf); /* Had no explicit -print[0] or -exec? then print */ - if ((i & TRUE) && need_print) + if ((r & TRUE) && G.need_print) puts(fileName); + +#if ENABLE_FEATURE_FIND_MAXDEPTH + if (S_ISDIR(statbuf->st_mode)) { + if (depth == G.minmaxdepth[1]) + return SKIP; + } +#endif + /* -xdev stops on mountpoints, but AFTER mountpoit itself + * is processed as usual */ + if (!same_fs) { + return SKIP; + } + /* Cannot return 0: our caller, recursive_action(), * will perror() and skip dirs (if called on dir) */ - return (i & SKIP) ? SKIP : TRUE; + return (r & SKIP) ? SKIP : TRUE; } @@ -418,8 +897,8 @@ static int find_type(const char *type) else if (*type == 's') mask = S_IFSOCK; - if (mask == 0 || *(type + 1) != '\0') - bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type"); + if (mask == 0 || type[1] != '\0') + bb_error_msg_and_die(bb_msg_invalid_arg_to, type, "-type"); return mask; } @@ -427,7 +906,7 @@ static int find_type(const char *type) #if ENABLE_FEATURE_FIND_PERM \ || ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \ - || ENABLE_FEATURE_FIND_SIZE + || ENABLE_FEATURE_FIND_SIZE || ENABLE_FEATURE_FIND_LINKS static const char* plus_minus_num(const char* str) { if (*str == '-' || *str == '+') @@ -436,115 +915,162 @@ static const char* plus_minus_num(const char* str) } #endif +/* Say no to GCCism */ +#define USE_NESTED_FUNCTION 0 + +#if !USE_NESTED_FUNCTION +struct pp_locals { + action*** appp; + unsigned cur_group; + unsigned cur_action; + IF_FEATURE_FIND_NOT( bool invert_flag; ) +}; +static action* alloc_action(struct pp_locals *ppl, int sizeof_struct, action_fp f) +{ + action *ap = xzalloc(sizeof_struct); + action **app; + action ***group = &ppl->appp[ppl->cur_group]; + *group = app = xrealloc(*group, (ppl->cur_action+2) * sizeof(ppl->appp[0][0])); + app[ppl->cur_action++] = ap; + app[ppl->cur_action] = NULL; + ap->f = f; + IF_FEATURE_FIND_NOT( ap->invert = ppl->invert_flag; ) + IF_FEATURE_FIND_NOT( ppl->invert_flag = 0; ) + return ap; +} +#endif + static action*** parse_params(char **argv) { enum { - PARM_a , - PARM_o , - USE_FEATURE_FIND_NOT( PARM_char_not ,) + OPT_FOLLOW , + IF_FEATURE_FIND_XDEV( OPT_XDEV ,) + IF_FEATURE_FIND_DEPTH( OPT_DEPTH ,) + PARM_a , + PARM_o , + IF_FEATURE_FIND_NOT( PARM_char_not ,) +#if ENABLE_DESKTOP + PARM_and , + PARM_or , + IF_FEATURE_FIND_NOT( PARM_not ,) +#endif + PARM_print , + IF_FEATURE_FIND_PRINT0( PARM_print0 ,) + IF_FEATURE_FIND_PRUNE( PARM_prune ,) + IF_FEATURE_FIND_DELETE( PARM_delete ,) + IF_FEATURE_FIND_EXEC( PARM_exec ,) + IF_FEATURE_FIND_PAREN( PARM_char_brace,) + /* All options/actions starting from here require argument */ + PARM_name , + PARM_iname , + IF_FEATURE_FIND_PATH( PARM_path ,) #if ENABLE_DESKTOP - PARM_and , - PARM_or , - USE_FEATURE_FIND_NOT( PARM_not ,) -#endif - PARM_print , - USE_FEATURE_FIND_PRINT0( PARM_print0 ,) - USE_FEATURE_FIND_DEPTH( PARM_depth ,) - USE_FEATURE_FIND_PRUNE( PARM_prune ,) - USE_FEATURE_FIND_DELETE( PARM_delete ,) - USE_FEATURE_FIND_EXEC( PARM_exec ,) - USE_FEATURE_FIND_PAREN( PARM_char_brace,) - /* All options starting from here require argument */ - PARM_name , - USE_FEATURE_FIND_PATH( PARM_path ,) - USE_FEATURE_FIND_REGEX( PARM_regex ,) - USE_FEATURE_FIND_TYPE( PARM_type ,) - USE_FEATURE_FIND_PERM( PARM_perm ,) - USE_FEATURE_FIND_MTIME( PARM_mtime ,) - USE_FEATURE_FIND_MMIN( PARM_mmin ,) - USE_FEATURE_FIND_NEWER( PARM_newer ,) - USE_FEATURE_FIND_INUM( PARM_inum ,) - USE_FEATURE_FIND_USER( PARM_user ,) - USE_FEATURE_FIND_GROUP( PARM_group ,) - USE_FEATURE_FIND_SIZE( PARM_size ,) - USE_FEATURE_FIND_CONTEXT(PARM_context ,) + /* -wholename is a synonym for -path */ + /* We support it because Linux kernel's "make tags" uses it */ + IF_FEATURE_FIND_PATH( PARM_wholename ,) +#endif + IF_FEATURE_FIND_PATH( PARM_ipath ,) + IF_FEATURE_FIND_REGEX( PARM_regex ,) + IF_FEATURE_FIND_TYPE( PARM_type ,) + IF_FEATURE_FIND_PERM( PARM_perm ,) + IF_FEATURE_FIND_MTIME( PARM_mtime ,) + IF_FEATURE_FIND_MMIN( PARM_mmin ,) + IF_FEATURE_FIND_NEWER( PARM_newer ,) + IF_FEATURE_FIND_INUM( PARM_inum ,) + IF_FEATURE_FIND_USER( PARM_user ,) + IF_FEATURE_FIND_GROUP( PARM_group ,) + IF_FEATURE_FIND_SIZE( PARM_size ,) + IF_FEATURE_FIND_CONTEXT(PARM_context ,) + IF_FEATURE_FIND_LINKS( PARM_links ,) + IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,OPT_MAXDEPTH,) }; static const char params[] ALIGN1 = - "-a\0" - "-o\0" - USE_FEATURE_FIND_NOT( "!\0" ) + "-follow\0" + IF_FEATURE_FIND_XDEV( "-xdev\0" ) + IF_FEATURE_FIND_DEPTH( "-depth\0" ) + "-a\0" + "-o\0" + IF_FEATURE_FIND_NOT( "!\0" ) #if ENABLE_DESKTOP - "-and\0" - "-or\0" - USE_FEATURE_FIND_NOT( "-not\0" ) -#endif - "-print\0" - USE_FEATURE_FIND_PRINT0( "-print0\0" ) - USE_FEATURE_FIND_DEPTH( "-depth\0" ) - USE_FEATURE_FIND_PRUNE( "-prune\0" ) - USE_FEATURE_FIND_DELETE( "-delete\0" ) - USE_FEATURE_FIND_EXEC( "-exec\0" ) - USE_FEATURE_FIND_PAREN( "(\0" ) - /* All options starting from here require argument */ - "-name\0" - USE_FEATURE_FIND_PATH( "-path\0" ) - USE_FEATURE_FIND_REGEX( "-regex\0" ) - USE_FEATURE_FIND_TYPE( "-type\0" ) - USE_FEATURE_FIND_PERM( "-perm\0" ) - USE_FEATURE_FIND_MTIME( "-mtime\0" ) - USE_FEATURE_FIND_MMIN( "-mmin\0" ) - USE_FEATURE_FIND_NEWER( "-newer\0" ) - USE_FEATURE_FIND_INUM( "-inum\0" ) - USE_FEATURE_FIND_USER( "-user\0" ) - USE_FEATURE_FIND_GROUP( "-group\0" ) - USE_FEATURE_FIND_SIZE( "-size\0" ) - USE_FEATURE_FIND_CONTEXT("-context\0") - ; + "-and\0" + "-or\0" + IF_FEATURE_FIND_NOT( "-not\0" ) +#endif + "-print\0" + IF_FEATURE_FIND_PRINT0( "-print0\0" ) + IF_FEATURE_FIND_PRUNE( "-prune\0" ) + IF_FEATURE_FIND_DELETE( "-delete\0" ) + IF_FEATURE_FIND_EXEC( "-exec\0" ) + IF_FEATURE_FIND_PAREN( "(\0" ) + /* All options/actions starting from here require argument */ + "-name\0" + "-iname\0" + IF_FEATURE_FIND_PATH( "-path\0" ) +#if ENABLE_DESKTOP + IF_FEATURE_FIND_PATH( "-wholename\0") +#endif + IF_FEATURE_FIND_PATH( "-ipath\0" ) + IF_FEATURE_FIND_REGEX( "-regex\0" ) + IF_FEATURE_FIND_TYPE( "-type\0" ) + IF_FEATURE_FIND_PERM( "-perm\0" ) + IF_FEATURE_FIND_MTIME( "-mtime\0" ) + IF_FEATURE_FIND_MMIN( "-mmin\0" ) + IF_FEATURE_FIND_NEWER( "-newer\0" ) + IF_FEATURE_FIND_INUM( "-inum\0" ) + IF_FEATURE_FIND_USER( "-user\0" ) + IF_FEATURE_FIND_GROUP( "-group\0" ) + IF_FEATURE_FIND_SIZE( "-size\0" ) + IF_FEATURE_FIND_CONTEXT("-context\0") + IF_FEATURE_FIND_LINKS( "-links\0" ) + IF_FEATURE_FIND_MAXDEPTH("-mindepth\0""-maxdepth\0") + ; +#if !USE_NESTED_FUNCTION + struct pp_locals ppl; +#define appp (ppl.appp ) +#define cur_group (ppl.cur_group ) +#define cur_action (ppl.cur_action ) +#define invert_flag (ppl.invert_flag) +#define ALLOC_ACTION(name) (action_##name*)alloc_action(&ppl, sizeof(action_##name), (action_fp) func_##name) +#else action*** appp; - unsigned cur_group = 0; - unsigned cur_action = 0; - USE_FEATURE_FIND_NOT( bool invert_flag = 0; ) + unsigned cur_group; + unsigned cur_action; + IF_FEATURE_FIND_NOT( bool invert_flag; ) - /* 'static' doesn't work here! (gcc 4.1.2) */ + /* This is the only place in busybox where we use nested function. + * So far more standard alternatives were bigger. */ + /* Auto decl suppresses "func without a prototype" warning: */ + auto action* alloc_action(int sizeof_struct, action_fp f); action* alloc_action(int sizeof_struct, action_fp f) { action *ap; - appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(*appp)); - appp[cur_group][cur_action++] = ap = xmalloc(sizeof_struct); + appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(appp[0][0])); + appp[cur_group][cur_action++] = ap = xzalloc(sizeof_struct); appp[cur_group][cur_action] = NULL; ap->f = f; - USE_FEATURE_FIND_NOT( ap->invert = invert_flag; ) - USE_FEATURE_FIND_NOT( invert_flag = 0; ) + IF_FEATURE_FIND_NOT( ap->invert = invert_flag; ) + IF_FEATURE_FIND_NOT( invert_flag = 0; ) return ap; } - #define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name) +#endif + cur_group = 0; + cur_action = 0; + IF_FEATURE_FIND_NOT( invert_flag = 0; ) appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */ -/* Actions have side effects and return a true or false value - * We implement: -print, -print0, -exec - * - * The rest are tests. - * - * Tests and actions are grouped by operators - * ( expr ) Force precedence - * ! expr True if expr is false - * -not expr Same as ! expr - * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false - * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true - * expr1 , expr2 List; both expr1 and expr2 are always evaluated - * We implement: (), -a, -o - */ while (*argv) { const char *arg = argv[0]; int parm = index_in_strings(params, arg); const char *arg1 = argv[1]; + dbg("arg:'%s' arg1:'%s' parm:%d PARM_type:%d", arg, arg1, parm, PARM_type); + if (parm >= PARM_name) { - /* All options starting from -name require argument */ + /* All options/actions starting from -name require argument */ if (!arg1) bb_error_msg_and_die(bb_msg_requires_arg, arg); argv++; @@ -553,54 +1079,87 @@ static action*** parse_params(char **argv) /* We can use big switch() here, but on i386 * it doesn't give smaller code. Other arches? */ - /* --- Operators --- */ - if (parm == PARM_a USE_DESKTOP(|| parm == PARM_and)) { +/* Options always return true. They always take effect + * rather than being processed only when their place in the + * expression is reached. + */ + /* Options */ + if (parm == OPT_FOLLOW) { + dbg("follow enabled: %d", __LINE__); + G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK; + } +#if ENABLE_FEATURE_FIND_XDEV + else if (parm == OPT_XDEV) { + dbg("%d", __LINE__); + G.xdev_on = 1; + } +#endif +#if ENABLE_FEATURE_FIND_MAXDEPTH + else if (parm == OPT_MINDEPTH || parm == OPT_MINDEPTH + 1) { + dbg("%d", __LINE__); + G.minmaxdepth[parm - OPT_MINDEPTH] = xatoi_positive(arg1); + } +#endif +#if ENABLE_FEATURE_FIND_DEPTH + else if (parm == OPT_DEPTH) { + dbg("%d", __LINE__); + G.recurse_flags |= ACTION_DEPTHFIRST; + } +#endif +/* Actions are grouped by operators + * ( expr ) Force precedence + * ! expr True if expr is false + * -not expr Same as ! expr + * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false + * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true + * expr1 , expr2 List; both expr1 and expr2 are always evaluated + * We implement: (), -a, -o + */ + /* Operators */ + else if (parm == PARM_a IF_DESKTOP(|| parm == PARM_and)) { + dbg("%d", __LINE__); /* no further special handling required */ } - else if (parm == PARM_o USE_DESKTOP(|| parm == PARM_or)) { + else if (parm == PARM_o IF_DESKTOP(|| parm == PARM_or)) { + dbg("%d", __LINE__); /* start new OR group */ cur_group++; - appp = xrealloc(appp, (cur_group+2) * sizeof(*appp)); + appp = xrealloc(appp, (cur_group+2) * sizeof(appp[0])); /*appp[cur_group] = NULL; - already NULL */ appp[cur_group+1] = NULL; cur_action = 0; } #if ENABLE_FEATURE_FIND_NOT - else if (parm == PARM_char_not USE_DESKTOP(|| parm == PARM_not)) { + else if (parm == PARM_char_not IF_DESKTOP(|| parm == PARM_not)) { /* also handles "find ! ! -name 'foo*'" */ invert_flag ^= 1; + dbg("invert_flag:%d", invert_flag); } #endif - - /* --- Tests and actions --- */ + /* Actions */ else if (parm == PARM_print) { - need_print = 0; - /* GNU find ignores '!' here: "find ! -print" */ - USE_FEATURE_FIND_NOT( invert_flag = 0; ) + dbg("%d", __LINE__); + G.need_print = 0; (void) ALLOC_ACTION(print); } #if ENABLE_FEATURE_FIND_PRINT0 else if (parm == PARM_print0) { - need_print = 0; - USE_FEATURE_FIND_NOT( invert_flag = 0; ) + dbg("%d", __LINE__); + G.need_print = 0; (void) ALLOC_ACTION(print0); } #endif -#if ENABLE_FEATURE_FIND_DEPTH - else if (parm == PARM_depth) { - recurse_flags |= ACTION_DEPTHFIRST; - } -#endif #if ENABLE_FEATURE_FIND_PRUNE else if (parm == PARM_prune) { - USE_FEATURE_FIND_NOT( invert_flag = 0; ) + dbg("%d", __LINE__); (void) ALLOC_ACTION(prune); } #endif #if ENABLE_FEATURE_FIND_DELETE else if (parm == PARM_delete) { - need_print = 0; - recurse_flags |= ACTION_DEPTHFIRST; + dbg("%d", __LINE__); + G.need_print = 0; + G.recurse_flags |= ACTION_DEPTHFIRST; (void) ALLOC_ACTION(delete); } #endif @@ -608,16 +1167,28 @@ static action*** parse_params(char **argv) else if (parm == PARM_exec) { int i; action_exec *ap; - need_print = 0; - USE_FEATURE_FIND_NOT( invert_flag = 0; ) + IF_FEATURE_FIND_EXEC_PLUS(int all_subst = 0;) + dbg("%d", __LINE__); + G.need_print = 0; ap = ALLOC_ACTION(exec); ap->exec_argv = ++argv; /* first arg after -exec */ - ap->exec_argc = 0; + /*ap->exec_argc = 0; - ALLOC_ACTION did it */ while (1) { - if (!*argv) /* did not see ';' until end */ - bb_error_msg_and_die("-exec CMD must end by ';'"); - if (LONE_CHAR(argv[0], ';')) + if (!*argv) /* did not see ';' or '+' until end */ + bb_error_msg_and_die(bb_msg_requires_arg, "-exec"); + // find -exec echo Foo ">{}<" ";" + // executes "echo Foo >FILENAME<", + // find -exec echo Foo ">{}<" "+" + // executes "echo Foo FILENAME1 FILENAME2 FILENAME3...". + if ((argv[0][0] == ';' || argv[0][0] == '+') + && argv[0][1] == '\0' + ) { +# if ENABLE_FEATURE_FIND_EXEC_PLUS + if (argv[0][0] == '+') + ap->filelist = xzalloc(sizeof(ap->filelist[0])); +# endif break; + } argv++; ap->exec_argc++; } @@ -625,8 +1196,17 @@ static action*** parse_params(char **argv) bb_error_msg_and_die(bb_msg_requires_arg, arg); ap->subst_count = xmalloc(ap->exec_argc * sizeof(int)); i = ap->exec_argc; - while (i--) - ap->subst_count[i] = count_subst(ap->exec_argv[i]); + while (i--) { + ap->subst_count[i] = count_strstr(ap->exec_argv[i], "{}"); + IF_FEATURE_FIND_EXEC_PLUS(all_subst += ap->subst_count[i];) + } +# if ENABLE_FEATURE_FIND_EXEC_PLUS + /* + * coreutils expects {} to appear only once in "-exec +" + */ + if (all_subst != 1 && ap->filelist) + bb_error_msg_and_die("only one '{}' allowed for -exec +"); +# endif } #endif #if ENABLE_FEATURE_FIND_PAREN @@ -635,6 +1215,7 @@ static action*** parse_params(char **argv) char **endarg; unsigned nested = 1; + dbg("%d", __LINE__); endarg = argv; while (1) { if (!*++endarg) @@ -652,21 +1233,26 @@ static action*** parse_params(char **argv) argv = endarg; } #endif - else if (parm == PARM_name) { + else if (parm == PARM_name || parm == PARM_iname) { action_name *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(name); ap->pattern = arg1; + ap->iname = (parm == PARM_iname); } #if ENABLE_FEATURE_FIND_PATH - else if (parm == PARM_path) { + else if (parm == PARM_path IF_DESKTOP(|| parm == PARM_wholename) || parm == PARM_ipath) { action_path *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(path); ap->pattern = arg1; + ap->ipath = (parm == PARM_ipath); } #endif #if ENABLE_FEATURE_FIND_REGEX else if (parm == PARM_regex) { action_regex *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(regex); xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/); } @@ -676,27 +1262,31 @@ static action*** parse_params(char **argv) action_type *ap; ap = ALLOC_ACTION(type); ap->type_mask = find_type(arg1); + dbg("created:type mask:%x", ap->type_mask); } #endif #if ENABLE_FEATURE_FIND_PERM -/* -perm mode File's permission bits are exactly mode (octal or symbolic). +/* -perm BITS File's mode bits are exactly BITS (octal or symbolic). * Symbolic modes use mode 0 as a point of departure. - * -perm -mode All of the permission bits mode are set for the file. - * -perm +mode Any of the permission bits mode are set for the file. + * -perm -BITS All of the BITS are set in file's mode. + * -perm [+/]BITS At least one of the BITS is set in file's mode. */ else if (parm == PARM_perm) { action_perm *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(perm); ap->perm_char = arg1[0]; - arg1 = plus_minus_num(arg1); - ap->perm_mask = 0; - if (!bb_parse_mode(arg1, &ap->perm_mask)) - bb_error_msg_and_die("invalid mode: %s", arg1); + arg1 = (arg1[0] == '/' ? arg1+1 : plus_minus_num(arg1)); + /*ap->perm_mask = 0; - ALLOC_ACTION did it */ + ap->perm_mask = bb_parse_mode(arg1, ap->perm_mask); + if (ap->perm_mask == (mode_t)-1) + bb_error_msg_and_die("invalid mode '%s'", arg1); } #endif #if ENABLE_FEATURE_FIND_MTIME else if (parm == PARM_mtime) { action_mtime *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(mtime); ap->mtime_char = arg1[0]; ap->mtime_days = xatoul(plus_minus_num(arg1)); @@ -705,6 +1295,7 @@ static action*** parse_params(char **argv) #if ENABLE_FEATURE_FIND_MMIN else if (parm == PARM_mmin) { action_mmin *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(mmin); ap->mmin_char = arg1[0]; ap->mmin_mins = xatoul(plus_minus_num(arg1)); @@ -714,6 +1305,7 @@ static action*** parse_params(char **argv) else if (parm == PARM_newer) { struct stat stat_newer; action_newer *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(newer); xstat(arg1, &stat_newer); ap->newer_mtime = stat_newer.st_mtime; @@ -722,6 +1314,7 @@ static action*** parse_params(char **argv) #if ENABLE_FEATURE_FIND_INUM else if (parm == PARM_inum) { action_inum *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(inum); ap->inode_num = xatoul(arg1); } @@ -729,6 +1322,7 @@ static action*** parse_params(char **argv) #if ENABLE_FEATURE_FIND_USER else if (parm == PARM_user) { action_user *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(user); ap->uid = bb_strtou(arg1, NULL, 10); if (errno) @@ -738,6 +1332,7 @@ static action*** parse_params(char **argv) #if ENABLE_FEATURE_FIND_GROUP else if (parm == PARM_group) { action_group *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(group); ap->gid = bb_strtou(arg1, NULL, 10); if (errno) @@ -763,9 +1358,10 @@ static action*** parse_params(char **argv) { "", 512 }, { "b", 512 }, { "k", 1024 }, - { } + { "", 0 } }; action_size *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(size); ap->size_char = arg1[0]; ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes); @@ -774,10 +1370,21 @@ static action*** parse_params(char **argv) #if ENABLE_FEATURE_FIND_CONTEXT else if (parm == PARM_context) { action_context *ap; + dbg("%d", __LINE__); ap = ALLOC_ACTION(context); - ap->context = NULL; - if (selinux_raw_to_trans_context(arg1, &ap->context)) - bb_perror_msg("%s", arg1); + /*ap->context = NULL; - ALLOC_ACTION did it */ + /* SELinux headers erroneously declare non-const parameter */ + if (selinux_raw_to_trans_context((char*)arg1, &ap->context)) + bb_simple_perror_msg(arg1); + } +#endif +#if ENABLE_FEATURE_FIND_LINKS + else if (parm == PARM_links) { + action_links *ap; + dbg("%d", __LINE__); + ap = ALLOC_ACTION(links); + ap->links_char = arg1[0]; + ap->links_count = xatoul(plus_minus_num(arg1)); } #endif else { @@ -786,106 +1393,95 @@ static action*** parse_params(char **argv) } argv++; } + dbg("exiting %s", __func__); return appp; #undef ALLOC_ACTION +#undef appp +#undef cur_action +#undef invert_flag } - -int find_main(int argc, char **argv); -int find_main(int argc, char **argv) +int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int find_main(int argc UNUSED_PARAM, char **argv) { - static const char options[] ALIGN1 = - "-follow\0" -USE_FEATURE_FIND_XDEV( "-xdev\0" ) -USE_FEATURE_FIND_MAXDEPTH("-maxdepth\0") - ; - enum { - OPT_FOLLOW, -USE_FEATURE_FIND_XDEV( OPT_XDEV ,) -USE_FEATURE_FIND_MAXDEPTH(OPT_MAXDEPTH,) - }; - - char *arg; - char **argp; int i, firstopt, status = EXIT_SUCCESS; -#if ENABLE_FEATURE_FIND_MAXDEPTH - int maxdepth = INT_MAX; -#endif + char **past_HLP, *saved; + + INIT_G(); + + /* "find -type f" + getopt("+HLP") => disaster. + * Need to avoid getopt running into a non-HLP option. + * Do this by temporarily storing NULL there: + */ + past_HLP = argv; + for (;;) { + saved = *++past_HLP; + if (!saved) + break; + if (saved[0] != '-') + break; + if (!saved[1]) + break; /* it is "-" */ + if ((saved+1)[strspn(saved+1, "HLP")] != '\0') + break; + } + *past_HLP = NULL; + /* "+": stop on first non-option */ + i = getopt32(argv, "+HLP"); + if (i & (1<<0)) + G.recurse_flags |= ACTION_FOLLOWLINKS_L0 | ACTION_DANGLING_OK; + if (i & (1<<1)) + G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK; + /* -P is default and is ignored */ + argv = past_HLP; /* same result as "argv += optind;" */ + *past_HLP = saved; - for (firstopt = 1; firstopt < argc; firstopt++) { + for (firstopt = 0; argv[firstopt]; firstopt++) { if (argv[firstopt][0] == '-') break; if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!')) break; -#if ENABLE_FEATURE_FIND_PAREN - if (LONE_CHAR(argv[firstopt], '(')) + if (ENABLE_FEATURE_FIND_PAREN && LONE_CHAR(argv[firstopt], '(')) break; -#endif } - if (firstopt == 1) { - argv[0] = (char*)"."; - argv--; + if (firstopt == 0) { + *--argv = (char*)"."; firstopt++; } -/* All options always return true. They always take effect - * rather than being processed only when their place in the - * expression is reached. - * We implement: -follow, -xdev, -maxdepth - */ - /* Process options, and replace then with -a */ - /* (-a will be ignored by recursive parser later) */ - argp = &argv[firstopt]; - while ((arg = argp[0])) { - int opt = index_in_strings(options, arg); - if (opt == OPT_FOLLOW) { - recurse_flags |= ACTION_FOLLOWLINKS; - argp[0] = (char*)"-a"; - } + G.actions = parse_params(&argv[firstopt]); + argv[firstopt] = NULL; + #if ENABLE_FEATURE_FIND_XDEV - if (opt == OPT_XDEV) { - struct stat stbuf; - if (!xdev_count) { - xdev_count = firstopt - 1; - xdev_dev = xmalloc(xdev_count * sizeof(dev_t)); - for (i = 1; i < firstopt; i++) { - /* not xstat(): shouldn't bomb out on - * "find not_exist exist -xdev" */ - if (stat(argv[i], &stbuf)) - stbuf.st_dev = -1L; - xdev_dev[i-1] = stbuf.st_dev; - } - } - argp[0] = (char*)"-a"; - } -#endif -#if ENABLE_FEATURE_FIND_MAXDEPTH - if (opt == OPT_MAXDEPTH) { - if (!argp[1]) - bb_show_usage(); - maxdepth = xatoi_u(argp[1]); - argp[0] = (char*)"-a"; - argp[1] = (char*)"-a"; - argp++; + if (G.xdev_on) { + struct stat stbuf; + + G.xdev_count = firstopt; + G.xdev_dev = xzalloc(G.xdev_count * sizeof(G.xdev_dev[0])); + for (i = 0; argv[i]; i++) { + /* not xstat(): shouldn't bomb out on + * "find not_exist exist -xdev" */ + if (stat(argv[i], &stbuf) == 0) + G.xdev_dev[i] = stbuf.st_dev; + /* else G.xdev_dev[i] stays 0 and + * won't match any real device dev_t + */ } -#endif - argp++; } +#endif - actions = parse_params(&argv[firstopt]); - - for (i = 1; i < firstopt; i++) { + for (i = 0; argv[i]; i++) { if (!recursive_action(argv[i], - recurse_flags, /* flags */ + G.recurse_flags,/* flags */ fileAction, /* file action */ fileAction, /* dir action */ -#if ENABLE_FEATURE_FIND_MAXDEPTH - (void*)maxdepth,/* user data */ -#else NULL, /* user data */ -#endif - 0)) /* depth */ - status = EXIT_FAILURE; + 0) /* depth */ + ) { + status |= EXIT_FAILURE; + } } + + IF_FEATURE_FIND_EXEC_PLUS(status |= flush_exec_plus();) return status; }