busybox/findutils/find.c
Aaro Koskinen af18b301eb find: implement -empty
function                                             old     new   delta
func_empty                                             -     121    +121
packed_usage                                       33154   33167     +13
parse_params                                        1490    1500     +10
static.params                                        228     235      +7
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/0 up/down: 151/0)             Total: 151 bytes

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-09-12 12:04:34 +02:00

1583 lines
44 KiB
C

/* vi: set sw=4 ts=4: */
/*
* Mini find implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Reworked by David Douthitt <n9ubh@callsign.net> and
* Matt Kraai <kraai@alumni.carnegiemellon.edu>.
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
/* findutils-4.1.20:
*
* # find file.txt -exec 'echo {}' '{} {}' ';'
* find: echo file.txt: No such file or directory
* # find file.txt -exec 'echo' '{} {}' '; '
* find: missing argument to '-exec'
* # find file.txt -exec 'echo {}' '{} {}' ';' junk
* find: paths must precede expression
* # find file.txt -exec 'echo {}' '{} {}' ';' junk ';'
* find: paths must precede expression
* # find file.txt -exec 'echo' '{} {}' ';'
* file.txt file.txt
* (strace: execve("/bin/echo", ["echo", "file.txt file.txt"], [ 30 vars ]))
* # find file.txt -exec 'echo' '{} {}' ';' -print -exec pwd ';'
* file.txt file.txt
* file.txt
* /tmp
* # find -name '*.c' -o -name '*.h'
* [shows files, *.c and *.h intermixed]
* # find file.txt -name '*f*' -o -name '*t*'
* file.txt
* # find file.txt -name '*z*' -o -name '*t*'
* file.txt
* # find file.txt -name '*f*' -o -name '*z*'
* file.txt
*
* # find t z -name '*t*' -print -o -name '*z*'
* t
* # find t z t z -name '*t*' -o -name '*z*' -print
* z
* z
* # find t z t z '(' -name '*t*' -o -name '*z*' ')' -o -print
* (no output)
*/
/* Testing script
* ./busybox find "$@" | tee /tmp/bb_find
* echo ==================
* /path/to/gnu/find "$@" | tee /tmp/std_find
* echo ==================
* diff -u /tmp/std_find /tmp/bb_find && echo Identical
*/
//config:config FIND
//config: bool "find (14 kb)"
//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_EXECUTABLE
//config: bool "Enable -executable: file is executable"
//config: default y
//config: depends on FIND
//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_QUIT
//config: bool "Enable -quit: exit"
//config: default y
//config: depends on FIND
//config: help
//config: If this action is reached, 'find' exits.
//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_EMPTY
//config: bool "Enable -empty: match empty files or directories"
//config: default y
//config: depends on FIND
//config: help
//config: Support the 'find -empty' option to find empty regular files
//config: or directories.
//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,s,p)"
//usage: )
//usage: IF_FEATURE_FIND_EXECUTABLE(
//usage: "\n -executable File is executable"
//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_EMPTY(
//usage: "\n -empty Match empty file/directory"
//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: IF_FEATURE_FIND_QUIT(
//usage: "\n -quit Exit"
//usage: )
//usage:
//usage:#define find_example_usage
//usage: "$ find / -name passwd\n"
//usage: "/etc/passwd\n"
#include <fnmatch.h>
#include "libbb.h"
#include "common_bufsiz.h"
#if ENABLE_FEATURE_FIND_REGEX
# include "xregex.h"
#endif
/* GNUism: */
#ifndef FNM_CASEFOLD
# define FNM_CASEFOLD 0
#endif
#if 1
# define dbg(...) ((void)0)
#else
# define dbg(...) bb_error_msg(__VA_ARGS__)
#endif
/* This is a NOEXEC applet. Be very careful! */
typedef int (*action_fp)(const char *fileName, const struct stat *statbuf, void *) FAST_FUNC;
typedef struct {
action_fp f;
#if ENABLE_FEATURE_FIND_NOT
bool invert;
#endif
} action;
#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_EXECUTABLE(ACTS(executable))
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_QUIT( ACTS(quit))
IF_FEATURE_FIND_DELETE( ACTS(delete))
IF_FEATURE_FIND_EMPTY( ACTS(empty))
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;))
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;
smalluint exitstatus;
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, const struct stat *statbuf)
{
int cur_group;
int cur_action;
int rc = 0;
action **app, *ap;
/* "action group" is a set of actions ANDed together.
* groups are ORed together.
* We simply evaluate each group until we find one in which all actions
* succeed. */
/* -prune is special: if it is encountered, then we won't
* descend into current directory. It doesn't matter whether
* action group (in which -prune sits) will succeed or not:
* find * -prune -name 'f*' -o -name 'm*' -- prunes every dir
* find * -name 'f*' -o -prune -name 'm*' -- prunes all dirs
* not starting with 'f' */
/* We invert TRUE bit (bit 0). Now 1 there means 'failure'.
* and bitwise OR in "rc |= TRUE ^ ap->f()" will:
* (1) make SKIP (-prune) bit stick; and (2) detect 'failure'.
* On return, bit is restored. */
cur_group = -1;
while ((app = appp[++cur_group]) != NULL) {
rc &= ~TRUE; /* 'success' so far, clear TRUE bit */
cur_action = -1;
while (1) {
ap = app[++cur_action];
if (!ap) /* all actions in group were successful */
return rc ^ TRUE; /* restore TRUE bit */
rc |= TRUE ^ ap->f(fileName, statbuf, ap);
#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);
/* 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--;
}
}
/* 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
ACTF(regex)
{
regmatch_t match;
if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
return 0; /* no match */
if (match.rm_so)
return 0; /* match doesn't start at pos 0 */
if (fileName[match.rm_eo])
return 0; /* match doesn't end exactly at end of pathname */
return 1;
}
#endif
#if ENABLE_FEATURE_FIND_TYPE
ACTF(type)
{
return ((statbuf->st_mode & S_IFMT) == ap->type_mask);
}
#endif
#if ENABLE_FEATURE_FIND_EXECUTABLE
ACTF(executable)
{
return access(fileName, X_OK) == 0;
}
#endif
#if ENABLE_FEATURE_FIND_PERM
ACTF(perm)
{
/* -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 == '-')
return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask;
/* -perm mode: file mode must match perm_mask */
return (statbuf->st_mode & 07777) == ap->perm_mask;
}
#endif
#if ENABLE_FEATURE_FIND_MTIME
ACTF(mtime)
{
time_t file_age = time(NULL) - statbuf->st_mtime;
time_t mtime_secs = ap->mtime_days * 24*60*60;
if (ap->mtime_char == '+')
return file_age >= mtime_secs + 24*60*60;
if (ap->mtime_char == '-')
return file_age < mtime_secs;
/* just numeric mtime */
return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60);
}
#endif
#if ENABLE_FEATURE_FIND_MMIN
ACTF(mmin)
{
time_t file_age = time(NULL) - statbuf->st_mtime;
time_t mmin_secs = ap->mmin_mins * 60;
if (ap->mmin_char == '+')
return file_age >= mmin_secs + 60;
if (ap->mmin_char == '-')
return file_age < mmin_secs;
/* just numeric mmin */
return file_age >= mmin_secs && file_age < (mmin_secs + 60);
}
#endif
#if ENABLE_FEATURE_FIND_NEWER
ACTF(newer)
{
return (ap->newer_mtime < statbuf->st_mtime);
}
#endif
#if ENABLE_FEATURE_FIND_INUM
ACTF(inum)
{
return (statbuf->st_ino == ap->inode_num);
}
#endif
#if ENABLE_FEATURE_FIND_EXEC
static int do_exec(action_exec *ap, const char *fileName)
{
int i, rc;
# 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_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)
{
return (statbuf->st_uid == ap->uid);
}
#endif
#if ENABLE_FEATURE_FIND_GROUP
ACTF(group)
{
return (statbuf->st_gid == ap->gid);
}
#endif
#if ENABLE_FEATURE_FIND_PRINT0
ACTF(print0)
{
printf("%s%c", fileName, '\0');
return TRUE;
}
#endif
ACTF(print)
{
puts(fileName);
return TRUE;
}
#if ENABLE_FEATURE_FIND_PAREN
ACTF(paren)
{
return exec_actions(ap->subexpr, fileName, statbuf);
}
#endif
#if ENABLE_FEATURE_FIND_SIZE
ACTF(size)
{
if (ap->size_char == '+')
return statbuf->st_size > ap->size;
if (ap->size_char == '-')
return statbuf->st_size < ap->size;
return statbuf->st_size == ap->size;
}
#endif
#if ENABLE_FEATURE_FIND_PRUNE
/*
* -prune: if -depth is not given, return true and do not descend
* current dir; if -depth is given, return false with no effect.
* Example:
* find dir -name 'asm-*' -prune -o -name '*.[chS]' -print
*/
ACTF(prune)
{
return SKIP + TRUE;
}
#endif
#if ENABLE_FEATURE_FIND_QUIT
ACTF(quit)
{
exit(G.exitstatus);
}
#endif
#if ENABLE_FEATURE_FIND_DELETE
ACTF(delete)
{
int rc;
if (S_ISDIR(statbuf->st_mode)) {
/* "find . -delete" skips rmdir(".") */
rc = 0;
if (NOT_LONE_CHAR(fileName, '.'))
rc = rmdir(fileName);
} else {
rc = unlink(fileName);
}
if (rc < 0)
bb_simple_perror_msg(fileName);
return TRUE;
}
#endif
#if ENABLE_FEATURE_FIND_EMPTY
ACTF(empty)
{
if (S_ISDIR(statbuf->st_mode)) {
DIR *dir;
struct dirent *dent;
dir = opendir(fileName);
if (!dir) {
bb_simple_perror_msg(fileName);
return FALSE;
}
while ((dent = readdir(dir)) != NULL
&& DOT_OR_DOTDOT(dent->d_name)
) {
continue;
}
closedir(dir);
return dent == NULL;
}
return S_ISREG(statbuf->st_mode) && statbuf->st_size == 0;
}
#endif
#if ENABLE_FEATURE_FIND_CONTEXT
ACTF(context)
{
security_context_t con;
int rc;
if (G.recurse_flags & ACTION_FOLLOWLINKS) {
rc = getfilecon(fileName, &con);
} else {
rc = lgetfilecon(fileName, &con);
}
if (rc < 0)
return FALSE;
rc = strcmp(ap->context, con);
freecon(con);
return rc == 0;
}
#endif
#if ENABLE_FEATURE_FIND_LINKS
ACTF(links)
{
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) && 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
#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 ((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 (r & SKIP) ? SKIP : TRUE;
}
#if ENABLE_FEATURE_FIND_TYPE
static int find_type(const char *type)
{
int mask = 0;
if (*type == 'b')
mask = S_IFBLK;
else if (*type == 'c')
mask = S_IFCHR;
else if (*type == 'd')
mask = S_IFDIR;
else if (*type == 'p')
mask = S_IFIFO;
else if (*type == 'f')
mask = S_IFREG;
else if (*type == 'l')
mask = S_IFLNK;
else if (*type == 's')
mask = S_IFSOCK;
if (mask == 0 || type[1] != '\0')
bb_error_msg_and_die(bb_msg_invalid_arg_to, type, "-type");
return mask;
}
#endif
#if ENABLE_FEATURE_FIND_PERM \
|| ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \
|| ENABLE_FEATURE_FIND_SIZE || ENABLE_FEATURE_FIND_LINKS
static const char* plus_minus_num(const char* str)
{
if (*str == '-' || *str == '+')
str++;
return 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 {
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_QUIT( PARM_quit ,)
IF_FEATURE_FIND_DELETE( PARM_delete ,)
IF_FEATURE_FIND_EMPTY( PARM_empty ,)
IF_FEATURE_FIND_EXEC( PARM_exec ,)
IF_FEATURE_FIND_EXECUTABLE(PARM_executable,)
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
/* -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 =
"-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"
IF_FEATURE_FIND_NOT( "-not\0" )
#endif
"-print\0"
IF_FEATURE_FIND_PRINT0( "-print0\0" )
IF_FEATURE_FIND_PRUNE( "-prune\0" )
IF_FEATURE_FIND_QUIT( "-quit\0" )
IF_FEATURE_FIND_DELETE( "-delete\0" )
IF_FEATURE_FIND_EMPTY( "-empty\0" )
IF_FEATURE_FIND_EXEC( "-exec\0" )
IF_FEATURE_FIND_EXECUTABLE("-executable\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;
unsigned cur_action;
IF_FEATURE_FIND_NOT( bool invert_flag; )
/* 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[0][0]));
appp[cur_group][cur_action++] = ap = xzalloc(sizeof_struct);
appp[cur_group][cur_action] = NULL;
ap->f = f;
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 */
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/actions starting from -name require argument */
if (!arg1)
bb_error_msg_and_die(bb_msg_requires_arg, arg);
argv++;
}
/* We can use big switch() here, but on i386
* it doesn't give smaller code. Other arches? */
/* 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 IF_DESKTOP(|| parm == PARM_or)) {
dbg("%d", __LINE__);
/* start new OR group */
cur_group++;
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 IF_DESKTOP(|| parm == PARM_not)) {
/* also handles "find ! ! -name 'foo*'" */
invert_flag ^= 1;
dbg("invert_flag:%d", invert_flag);
}
#endif
/* Actions */
else if (parm == PARM_print) {
dbg("%d", __LINE__);
G.need_print = 0;
(void) ALLOC_ACTION(print);
}
#if ENABLE_FEATURE_FIND_PRINT0
else if (parm == PARM_print0) {
dbg("%d", __LINE__);
G.need_print = 0;
(void) ALLOC_ACTION(print0);
}
#endif
#if ENABLE_FEATURE_FIND_PRUNE
else if (parm == PARM_prune) {
dbg("%d", __LINE__);
(void) ALLOC_ACTION(prune);
}
#endif
#if ENABLE_FEATURE_FIND_QUIT
else if (parm == PARM_quit) {
dbg("%d", __LINE__);
(void) ALLOC_ACTION(quit);
}
#endif
#if ENABLE_FEATURE_FIND_DELETE
else if (parm == PARM_delete) {
dbg("%d", __LINE__);
G.need_print = 0;
G.recurse_flags |= ACTION_DEPTHFIRST;
(void) ALLOC_ACTION(delete);
}
#endif
#if ENABLE_FEATURE_FIND_EMPTY
else if (parm == PARM_empty) {
dbg("%d", __LINE__);
(void) ALLOC_ACTION(empty);
}
#endif
#if ENABLE_FEATURE_FIND_EXEC
else if (parm == PARM_exec) {
int i;
action_exec *ap;
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; - ALLOC_ACTION did it */
while (1) {
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++;
}
if (ap->exec_argc == 0)
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_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_simple_error_msg_and_die("only one '{}' allowed for -exec +");
# endif
}
#endif
#if ENABLE_FEATURE_FIND_PAREN
else if (parm == PARM_char_brace) {
action_paren *ap;
char **endarg;
unsigned nested = 1;
dbg("%d", __LINE__);
endarg = argv;
while (1) {
if (!*++endarg)
bb_simple_error_msg_and_die("unpaired '('");
if (LONE_CHAR(*endarg, '('))
nested++;
else if (LONE_CHAR(*endarg, ')') && !--nested) {
*endarg = NULL;
break;
}
}
ap = ALLOC_ACTION(paren);
ap->subexpr = parse_params(argv + 1);
*endarg = (char*) ")"; /* restore NULLed parameter */
argv = endarg;
}
#endif
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 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*/);
}
#endif
#if ENABLE_FEATURE_FIND_TYPE
else if (parm == PARM_type) {
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_EXECUTABLE
else if (parm == PARM_executable) {
(void) ALLOC_ACTION(executable);
}
#endif
#if ENABLE_FEATURE_FIND_PERM
/* -perm BITS File's mode bits are exactly BITS (octal or symbolic).
* Symbolic modes use mode 0 as a point of departure.
* -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 = (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));
}
#endif
#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));
}
#endif
#if ENABLE_FEATURE_FIND_NEWER
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;
}
#endif
#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);
}
#endif
#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)
ap->uid = xuname2uid(arg1);
}
#endif
#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)
ap->gid = xgroup2gid(arg1);
}
#endif
#if ENABLE_FEATURE_FIND_SIZE
else if (parm == PARM_size) {
/* -size n[bckw]: file uses n units of space
* b (default): units are 512-byte blocks
* c: 1 byte
* k: kilobytes
* w: 2-byte words
*/
#if ENABLE_LFS
#define XATOU_SFX xatoull_sfx
#else
#define XATOU_SFX xatoul_sfx
#endif
static const struct suffix_mult find_suffixes[] = {
{ "c", 1 },
{ "w", 2 },
{ "", 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);
}
#endif
#if ENABLE_FEATURE_FIND_CONTEXT
else if (parm == PARM_context) {
action_context *ap;
dbg("%d", __LINE__);
ap = ALLOC_ACTION(context);
/*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 {
bb_error_msg("unrecognized: %s", arg);
bb_show_usage();
}
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) MAIN_EXTERNALLY_VISIBLE;
int find_main(int argc UNUSED_PARAM, char **argv)
{
int i, firstopt;
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] == '-' && !saved[2]) {
/* it is "--" */
/* Try: find -- /dev/null */
saved = *++past_HLP;
break;
}
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 = 0; argv[firstopt]; firstopt++) {
if (argv[firstopt][0] == '-')
break;
if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
break;
if (ENABLE_FEATURE_FIND_PAREN && LONE_CHAR(argv[firstopt], '('))
break;
}
if (firstopt == 0) {
*--argv = (char*)".";
firstopt++;
}
G.actions = parse_params(&argv[firstopt]);
argv[firstopt] = NULL;
#if ENABLE_FEATURE_FIND_XDEV
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
for (i = 0; argv[i]; i++) {
if (!recursive_action(argv[i],
G.recurse_flags,/* flags */
fileAction, /* file action */
fileAction, /* dir action */
NULL, /* user data */
0) /* depth */
) {
G.exitstatus |= EXIT_FAILURE;
}
}
IF_FEATURE_FIND_EXEC_PLUS(G.exitstatus |= flush_exec_plus();)
return G.exitstatus;
}