/* vi: set sw=4 ts=4: */ /* * Mini chown implementation for busybox * * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> * * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ /* BB_AUDIT SUSv3 defects - unsupported options -H, -L, and -P. */ /* BB_AUDIT GNU defects - unsupported long options. */ /* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */ #include "busybox.h" static uid_t uid = -1; static gid_t gid = -1; static int (*chown_func)(const char *, uid_t, gid_t) = chown; #define OPT_RECURSE (option_mask32 & 1) #define OPT_NODEREF (option_mask32 & 2) #define OPT_VERBOSE (USE_DESKTOP(option_mask32 & 4) SKIP_DESKTOP(0)) #define OPT_CHANGED (USE_DESKTOP(option_mask32 & 8) SKIP_DESKTOP(0)) #define OPT_QUIET (USE_DESKTOP(option_mask32 & 0x10) SKIP_DESKTOP(0)) #define OPT_STR ("Rh" USE_DESKTOP("vcf")) /* TODO: * -H if a command line argument is a symbolic link to a directory, traverse it * -L traverse every symbolic link to a directory encountered * -P do not traverse any symbolic links (default) */ static int fileAction(const char *fileName, struct stat *statbuf, void ATTRIBUTE_UNUSED *junk, int depth) { // TODO: -H/-L/-P // if (depth ... && S_ISLNK(statbuf->st_mode)) .... if (!chown_func(fileName, (uid == (uid_t)-1) ? statbuf->st_uid : uid, (gid == (gid_t)-1) ? statbuf->st_gid : gid)) { if (OPT_VERBOSE || (OPT_CHANGED && (statbuf->st_uid != uid || statbuf->st_gid != gid)) ) { printf("changed ownership of '%s' to %u:%u\n", fileName, uid, gid); } return TRUE; } if (!OPT_QUIET) bb_perror_msg("%s", fileName); /* A filename can have % in it... */ return FALSE; } int chown_main(int argc, char **argv) { int retval = EXIT_SUCCESS; char *groupName; opt_complementary = "-2"; getopt32(argc, argv, OPT_STR); if (OPT_NODEREF) chown_func = lchown; argv += optind; /* First, check if there is a group name here */ groupName = strchr(*argv, '.'); if (!groupName) { groupName = strchr(*argv, ':'); } /* 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; /* Ok, ready to do the deed now */ do { if (!recursive_action(*argv, OPT_RECURSE, // recurse FALSE, // follow links: TODO: -H/-L/-P FALSE, // depth first fileAction, // file action fileAction, // dir action NULL, // user data 0) // depth ) { retval = EXIT_FAILURE; } } while (*++argv); return retval; }