X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=coreutils%2Fchown.c;h=985d18d6f43b5a58d01e39c5a867c581ea2f2024;hb=22542eca18e5807b72ddc78999f5101e33f17a53;hp=b73f66a894b7cba481a076de416959dbafc7138e;hpb=67b23e6043d8e2b30b0bf3bc105b8583c2a26db5;p=oweals%2Fbusybox.git diff --git a/coreutils/chown.c b/coreutils/chown.c index b73f66a89..985d18d6f 100644 --- a/coreutils/chown.c +++ b/coreutils/chown.c @@ -4,75 +4,229 @@ * * Copyright (C) 1999-2004 by Erik Andersen * - * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. + * Licensed under GPLv2 or later, see file LICENSE in this source tree. */ +//config:config CHOWN +//config: bool "chown (7.2 kb)" +//config: default y +//config: help +//config: chown is used to change the user and/or group ownership +//config: of files. +//config: +//config:config FEATURE_CHOWN_LONG_OPTIONS +//config: bool "Enable long options" +//config: default y +//config: depends on CHOWN && LONG_OPTS -/* BB_AUDIT SUSv3 defects - unsupported options -h, -H, -L, and -P. */ -/* BB_AUDIT GNU defects - unsupported options -h, -c, -f, -v, and long options. */ -/* BB_AUDIT Note: gnu chown does not support -H, -L, or -P. */ +//applet:IF_CHOWN(APPLET_NOEXEC(chown, chown, BB_DIR_BIN, BB_SUID_DROP, chown)) + +//kbuild:lib-$(CONFIG_CHOWN) += chown.o + +/* BB_AUDIT SUSv3 defects - none? */ /* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */ -#include -#include -#include -#include "busybox.h" +//usage:#define chown_trivial_usage +//usage: "[-Rh"IF_DESKTOP("LHPcvf")"]... USER[:[GRP]] FILE..." +//usage:#define chown_full_usage "\n\n" +//usage: "Change the owner and/or group of each FILE to USER and/or GRP\n" +//usage: "\n -R Recurse" +//usage: "\n -h Affect symlinks instead of symlink targets" +//usage: IF_DESKTOP( +//usage: "\n -L Traverse all symlinks to directories" +//usage: "\n -H Traverse symlinks on command line only" +//usage: "\n -P Don't traverse symlinks (default)" +//usage: "\n -c List changed files" +//usage: "\n -v List all files" +//usage: "\n -f Hide errors" +//usage: ) +//usage: +//usage:#define chown_example_usage +//usage: "$ ls -l /tmp/foo\n" +//usage: "-r--r--r-- 1 andersen andersen 0 Apr 12 18:25 /tmp/foo\n" +//usage: "$ chown root /tmp/foo\n" +//usage: "$ ls -l /tmp/foo\n" +//usage: "-r--r--r-- 1 root andersen 0 Apr 12 18:25 /tmp/foo\n" +//usage: "$ chown root.root /tmp/foo\n" +//usage: "ls -l /tmp/foo\n" +//usage: "-r--r--r-- 1 root root 0 Apr 12 18:25 /tmp/foo\n" + +#include "libbb.h" + +/* This is a NOEXEC applet. Be very careful! */ + + +#define OPT_STR "Rh" IF_DESKTOP("vcfLHP") +#define BIT_RECURSE 1 +#define OPT_RECURSE (opt & 1) +#define OPT_NODEREF (opt & 2) +#define OPT_VERBOSE (IF_DESKTOP(opt & 0x04) IF_NOT_DESKTOP(0)) +#define OPT_CHANGED (IF_DESKTOP(opt & 0x08) IF_NOT_DESKTOP(0)) +#define OPT_QUIET (IF_DESKTOP(opt & 0x10) IF_NOT_DESKTOP(0)) +/* POSIX options + * -L traverse every symbolic link to a directory encountered + * -H if a command line argument is a symbolic link to a directory, traverse it + * -P do not traverse any symbolic links (default) + * We do not conform to the following: + * "Specifying more than one of -H, -L, and -P is not an error. + * The last option specified shall determine the behavior of the utility." */ +/* -L */ +#define BIT_TRAVERSE 0x20 +#define OPT_TRAVERSE (IF_DESKTOP(opt & BIT_TRAVERSE) IF_NOT_DESKTOP(0)) +/* -H or -L */ +#define BIT_TRAVERSE_TOP (0x20|0x40) +#define OPT_TRAVERSE_TOP (IF_DESKTOP(opt & BIT_TRAVERSE_TOP) IF_NOT_DESKTOP(0)) -static uid_t uid = -1; -static gid_t gid = -1; +#if ENABLE_FEATURE_CHOWN_LONG_OPTIONS +static const char chown_longopts[] ALIGN1 = + "recursive\0" No_argument "R" + "dereference\0" No_argument "\xff" + "no-dereference\0" No_argument "h" +# if ENABLE_DESKTOP + "changes\0" No_argument "c" + "silent\0" No_argument "f" + "quiet\0" No_argument "f" + "verbose\0" No_argument "v" +# endif + ; +#endif -static int (*chown_func)(const char *, uid_t, gid_t) = chown; +typedef int (*chown_fptr)(const char *, uid_t, gid_t); -static int fileAction(const char *fileName, struct stat *statbuf, - void ATTRIBUTE_UNUSED *junk) +struct param_t { + struct bb_uidgid_t ugid; + chown_fptr chown_func; +}; + +static int FAST_FUNC fileAction(const char *fileName, struct stat *statbuf, + void *vparam, int depth UNUSED_PARAM) { - if (!chown_func(fileName, - (uid == (uid_t)-1) ? statbuf->st_uid : uid, - (gid == (gid_t)-1) ? statbuf->st_gid : gid)) { +#define param (*(struct param_t*)vparam) +#define opt option_mask32 + uid_t u = (param.ugid.uid == (uid_t)-1L) ? statbuf->st_uid : param.ugid.uid; + gid_t g = (param.ugid.gid == (gid_t)-1L) ? statbuf->st_gid : param.ugid.gid; + + if (param.chown_func(fileName, u, g) == 0) { + if (OPT_VERBOSE + || (OPT_CHANGED && (statbuf->st_uid != u || statbuf->st_gid != g)) + ) { + printf("changed ownership of '%s' to %u:%u\n", + fileName, (unsigned)u, (unsigned)g); + } return TRUE; } - bb_perror_msg("%s", fileName); /* A filename could have % in it... */ + if (!OPT_QUIET) + bb_simple_perror_msg(fileName); return FALSE; +#undef opt +#undef param } -#define FLAG_R 1 -#define FLAG_h 2 - -int chown_main(int argc, char **argv) +int chown_main(int argc UNUSED_PARAM, char **argv) { - int flags; int retval = EXIT_SUCCESS; - char *groupName; - - flags = getopt32(argc, argv, "Rh"); - - if (flags & FLAG_h) chown_func = lchown; - - if (argc - optind < 2) { - bb_show_usage(); - } + int opt, flags; + struct param_t param; +#if ENABLE_FEATURE_CHOWN_LONG_OPTIONS + opt = getopt32long(argv, "^" OPT_STR "\0" "=2", chown_longopts); +#else + opt = getopt32(argv, "^" OPT_STR "\0" "=2"); +#endif argv += optind; - /* First, check if there is a group name here */ - if ((groupName = strchr(*argv, '.')) == NULL) { - groupName = strchr(*argv, ':'); + /* This matches coreutils behavior (almost - see below) */ + param.chown_func = chown; + if (OPT_NODEREF + /* || (OPT_RECURSE && !OPT_TRAVERSE_TOP): */ + IF_DESKTOP( || (opt & (BIT_RECURSE|BIT_TRAVERSE_TOP)) == BIT_RECURSE) + ) { + param.chown_func = lchown; } - /* Check for the username and groupname */ - if (groupName) { - *groupName++ = '\0'; - gid = get_ug_id(groupName, bb_xgetgrnam); - } - if (--groupName != *argv) uid = get_ug_id(*argv, bb_xgetpwnam); - ++argv; + flags = ACTION_DEPTHFIRST; /* match coreutils order */ + if (OPT_RECURSE) + flags |= ACTION_RECURSE; + if (OPT_TRAVERSE_TOP) + flags |= ACTION_FOLLOWLINKS_L0; /* -H/-L: follow links on depth 0 */ + if (OPT_TRAVERSE) + flags |= ACTION_FOLLOWLINKS; /* follow links if -L */ + + parse_chown_usergroup_or_die(¶m.ugid, argv[0]); /* Ok, ready to do the deed now */ - do { - if (! recursive_action (*argv, (flags & FLAG_R), FALSE, FALSE, - fileAction, fileAction, NULL)) { + while (*++argv) { + if (!recursive_action(*argv, + flags, /* flags */ + fileAction, /* file action */ + fileAction, /* dir action */ + ¶m, /* user data */ + 0) /* depth */ + ) { retval = EXIT_FAILURE; } - } while (*++argv); + } return retval; } + +/* +Testcase. Run in empty directory. + +#!/bin/sh +t1="/tmp/busybox chown" +t2="/usr/bin/chown" +create() { + rm -rf $1; mkdir $1 + ( + cd $1 || exit 1 + mkdir dir dir2 + >up + >file + >dir/file + >dir2/file + ln -s dir linkdir + ln -s file linkfile + ln -s ../up dir/linkup + ln -s ../dir2 dir/linkupdir2 + ) + chown -R 0:0 $1 +} +tst() { + create test1 + create test2 + echo "[$1]" >>test1.out + echo "[$1]" >>test2.out + (cd test1; $t1 $1) >>test1.out 2>&1 + (cd test2; $t2 $1) >>test2.out 2>&1 + (cd test1; ls -lnR) >out1 + (cd test2; ls -lnR) >out2 + echo "chown $1" >out.diff + if ! diff -u out1 out2 >>out.diff; then exit 1; fi + rm out.diff +} +tst_for_each() { + tst "$1 1:1 file" + tst "$1 1:1 dir" + tst "$1 1:1 linkdir" + tst "$1 1:1 linkfile" +} +echo "If script produced 'out.diff' file, then at least one testcase failed" +>test1.out +>test2.out +# These match coreutils 6.8: +tst_for_each "-v" +tst_for_each "-vR" +tst_for_each "-vRP" +tst_for_each "-vRL" +tst_for_each "-vRH" +tst_for_each "-vh" +tst_for_each "-vhR" +tst_for_each "-vhRP" +tst_for_each "-vhRL" +tst_for_each "-vhRH" +# Fix `name' in coreutils output +sed 's/`/'"'"'/g' -i test2.out +# Compare us with coreutils output +diff -u test1.out test2.out + +*/