X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=coreutils%2Fchown.c;h=07d673f28d12668d785e0a0929a775d64cca0019;hb=637d2266e1ea711f27ab0aec200a196b5eccbbca;hp=76f3333e3b24aae40b7da34bf879f2d1f7ae88e9;hpb=1b61f41f577a247c7a9534c56966e796facf1494;p=oweals%2Fbusybox.git diff --git a/coreutils/chown.c b/coreutils/chown.c index 76f3333e3..07d673f28 100644 --- a/coreutils/chown.c +++ b/coreutils/chown.c @@ -1,7 +1,8 @@ +/* vi: set sw=4 ts=4: */ /* - * Mini chown/chmod/chgrp implementation for busybox + * Mini chown implementation for busybox * - * Copyright (C) 1998 by Erik Andersen + * Copyright (C) 1999-2003 by Erik Andersen * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -19,233 +20,86 @@ * */ -#include -#include -#include -#include "internal.h" +/* 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. */ +/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */ +#include +#include +#include +#include "busybox.h" -static int uid=-1; -static int gid=0; -static int whichApp; -static char* invocationName=NULL; -static mode_t mode=7777; +/* Don't use lchown for glibc older then 2.1.x */ +#if (__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1) +#define lchown chown +#endif +static long uid; +static long gid; -#define CHGRP_APP 1 -#define CHOWN_APP 2 -#define CHMOD_APP 3 +static int (*chown_func)(const char *, uid_t, gid_t) = chown; -static const char chgrp_usage[] = "[OPTION]... GROUP FILE...\n" - "Change the group membership of each FILE to GROUP.\n" - "\n\tOptions:\n" "\t-R\tchange files and directories recursively\n"; -static const char chown_usage[] = "[OPTION]... OWNER[.[GROUP] FILE...\n" - "Change the owner and/or group of each FILE to OWNER and/or GROUP.\n" - "\n\tOptions:\n" "\t-R\tchange files and directories recursively\n"; -static const char chmod_usage[] = "[-R] MODE[,MODE]... FILE...\n" -"Each MODE is one or more of the letters ugoa, one of the symbols +-= and\n" -"one or more of the letters rwxst.\n\n" - "\t-R\tchange files and directories recursively.\n"; - - - -static int fileAction(const char *fileName) +static int fileAction(const char *fileName, struct stat *statbuf, void* junk) { - struct stat statBuf; - if (stat(fileName, &statBuf) < 0) { - switch (whichApp) { - case CHGRP_APP: - case CHOWN_APP: - if (chown(fileName, ((whichApp==CHOWN_APP)? uid: statBuf.st_uid), gid) < 0) - return( TRUE); - case CHMOD_APP: - if (chmod(fileName, mode)) - return( TRUE); + if (chown_func(fileName, uid, (gid == -1) ? statbuf->st_gid : gid) == 0) { + chmod(fileName, statbuf->st_mode); + return (TRUE); } - } - perror(fileName); - return( FALSE); + bb_perror_msg("%s", fileName); /* Avoid multibyte problems. */ + return (FALSE); } -/* [ugoa]{+|-|=}[rwxstl] */ -int parse_mode( const char* s, mode_t* or, mode_t* and, int* group_execute) -{ - mode_t mode = 0; - mode_t groups = S_ISVTX; - char type; - char c; +#define FLAG_R 1 +#define FLAG_h 2 - do { - for ( ; ; ) { - switch ( c = *s++ ) { - case '\0': - return (FALSE); - case 'u': - groups |= S_ISUID|S_IRWXU; - continue; - case 'g': - groups |= S_ISGID|S_IRWXG; - continue; - case 'o': - groups |= S_IRWXO; - continue; - case 'a': - groups |= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO; - continue; - case '+': - case '=': - case '-': - type = c; - if ( groups == S_ISVTX ) /* The default is "all" */ - groups |= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO; - break; - default: - if ( c >= '0' && c <= '7' && mode == 0 && groups == S_ISVTX ) { - *and = 0; - *or = strtol(--s, 0, 010); - return (TRUE); - } - else - return (FALSE); - } - break; - } +int chown_main(int argc, char **argv) +{ + int flags; + int retval = EXIT_SUCCESS; + char *groupName; - while ( (c = *s++) != '\0' ) { - switch ( c ) { - case ',': - break; - case 'r': - mode |= S_IRUSR|S_IRGRP|S_IROTH; - continue; - case 'w': - mode |= S_IWUSR|S_IWGRP|S_IWOTH; - continue; - case 'x': - mode |= S_IXUSR|S_IXGRP|S_IXOTH; - continue; - case 's': - if ( group_execute != 0 && (groups & S_IRWXG) ) { - if ( *group_execute < 0 ) - return (FALSE); - if ( type != '-' ) { - mode |= S_IXGRP; - *group_execute = 1; - } - } - mode |= S_ISUID|S_ISGID; - continue; - case 'l': - if ( *group_execute > 0 ) - return (FALSE); - if ( type != '-' ) { - *and &= ~S_IXGRP; - *group_execute = -1; - } - mode |= S_ISGID; - groups |= S_ISGID; - continue; - case 't': - mode |= S_ISVTX; - continue; - default: - return (FALSE); - } - break; - } - switch ( type ) { - case '=': - *and &= ~(groups); - /* fall through */ - case '+': - *or |= mode & groups; - break; - case '-': - *and &= ~(mode & groups); - *or &= *and; - break; - } - } while ( c == ',' ); - return (TRUE); -} + flags = bb_getopt_ulflags(argc, argv, "Rh"); + if (flags & FLAG_h) chown_func = lchown; -int chmod_chown_chgrp_main(int argc, char **argv) -{ - struct group *grp; - struct passwd *pwd; - int recursiveFlag=FALSE; - char *groupName; - - - whichApp = (strcmp(*argv, "chown")==0)? CHOWN_APP : (strcmp(*argv, "chmod")==0)? CHMOD_APP : CHGRP_APP; - - if (argc < 2) { - fprintf(stderr, "Usage: %s %s", *argv, - (whichApp==TRUE)? chown_usage : chgrp_usage); - exit( FALSE); - } - invocationName=*argv; - argc--; - argv++; - - /* Parse options */ - while (**argv == '-') { - while (*++(*argv)) switch (**argv) { - case 'R': - recursiveFlag = TRUE; - break; - default: - fprintf(stderr, "Unknown option: %c\n", **argv); - exit( FALSE); + if (argc - optind < 2) { + bb_show_usage(); } - argc--; - argv++; - } - - if ( whichApp == CHMOD_APP ) { - /* Find the specified modes */ - if ( parse_mode(*argv, &orWithMode, &andWithMode, 0) == FALSE ) { - fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv); - exit( FALSE); - } - mode &= andWithMode; - mode |= orWithMode; - } else { - - /* Find the selected group */ - groupName = strchr(*argv, '.'); - if ( whichApp==TRUE && groupName ) - *groupName++ = '\0'; - else - groupName = *argv; - grp = getgrnam(groupName); - if (grp == NULL) { - fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName); - exit( FALSE); + + argv += optind; + + /* First, check if there is a group name here */ + if ((groupName = strchr(*argv, '.')) == NULL) { + groupName = strchr(*argv, ':'); } - gid = grp->gr_gid; - - /* Find the selected user (if appropriate) */ - if (whichApp==TRUE) { - pwd = getpwnam(*argv); - if (pwd == NULL) { - fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv); - exit( FALSE); - } - uid = pwd->pw_uid; + + gid = -1; + if (groupName) { + *groupName++ = '\0'; + gid = get_ug_id(groupName, my_getgrnam); } - } - - /* Ok, ready to do the deed now */ - if (argc <= 1) { - fprintf(stderr, "%s: too few arguments", invocationName); - exit( FALSE); - } - while (argc-- > 1) { - argv++; - recursiveAction( *argv, recursiveFlag, TRUE, fileAction, fileAction); - } - exit(TRUE); + + /* Now check for the username */ + uid = get_ug_id(*argv, my_getpwnam); + + ++argv; + + /* Ok, ready to do the deed now */ + do { + if (! recursive_action (*argv, (flags & FLAG_R), FALSE, FALSE, + fileAction, fileAction, NULL)) { + retval = EXIT_FAILURE; + } + } while (*++argv); + + return retval; } +/* +Local Variables: +c-file-style: "linux" +c-basic-offset: 4 +tab-width: 4 +End: +*/