X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;ds=sidebyside;f=chmod_chown_chgrp.c;h=9363bd757b701e12a553673cd28bd4cc9c3edd32;hb=fa4f146d7d3600df63f76b1d4d90620d983901c4;hp=37a52281c6bf3ad095026bff6dbeb0616b087ce5;hpb=305a73f5eacd94eefe2f2a5a00034d579ef6b1e7;p=oweals%2Fbusybox.git diff --git a/chmod_chown_chgrp.c b/chmod_chown_chgrp.c index 37a52281c..9363bd757 100644 --- a/chmod_chown_chgrp.c +++ b/chmod_chown_chgrp.c @@ -1,7 +1,10 @@ +/* vi: set sw=4 ts=4: */ /* * Mini chown/chmod/chgrp implementation for busybox * - * Copyright (C) 1998 by Erik Andersen + * + * Copyright (C) 1999,2000,2001 by Lineo, inc. + * Written 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 @@ -19,235 +22,154 @@ * */ +#include "busybox.h" +#define BB_DECLARE_EXTERN +#define bb_need_invalid_option +#define bb_need_too_few_args +#include "messages.c" + #include -#include -#include -#include "internal.h" +#include +#include +#include -static int uid=-1; -static int gid=0; +static long uid = -1; +static long gid = -1; static int whichApp; -static char* invocationName=NULL; -static mode_t mode=7777; +static char *theMode = NULL; #define CHGRP_APP 1 #define CHOWN_APP 2 #define CHMOD_APP 3 -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); + case CHGRP_APP: + case CHOWN_APP: +#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1) + if (lchown + (fileName, (whichApp == CHOWN_APP) ? uid : statbuf->st_uid, + (gid == -1) ? statbuf->st_gid : gid) == 0) +#else + if (chown + (fileName, (whichApp == CHOWN_APP) ? uid : statbuf->st_uid, + (gid == -1) ? statbuf->st_gid : gid) == 0) +#endif + { + return (TRUE); + } + break; + case CHMOD_APP: + /* Parse the specified modes */ + if (parse_mode(theMode, &(statbuf->st_mode)) == FALSE) { + error_msg_and_die( "unknown mode: %s", theMode); + } + if (chmod(fileName, statbuf->st_mode) == 0) + return (TRUE); + break; } - } - perror(fileName); - return( FALSE); + perror(fileName); + return (FALSE); } -/* [ugoa]{+|-|=}[rwxstl] */ -int parse_mode( const char* s, mode_t* or, mode_t* and, int* group_execute) +int chmod_chown_chgrp_main(int argc, char **argv) { - mode_t mode = 0; - mode_t groups = S_ISVTX; - char type; - char c; - - 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 stopIt = FALSE; + int recursiveFlag = FALSE; + char *groupName=NULL; + char *p=NULL; - 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); + whichApp = (applet_name[2]=='o')? /* chown */ + CHOWN_APP : (applet_name[2]=='m')? /* chmod */ + CHMOD_APP : CHGRP_APP; + + if (argc < 2) + show_usage(); + argv++; + + /* Parse options */ + while (--argc >= 0 && *argv && (**argv == '-')) { + while (stopIt==FALSE && *++(*argv)) { + switch (**argv) { + case 'R': + recursiveFlag = TRUE; + break; + default: + theMode=*argv-1; + stopIt = TRUE; } - break; } - switch ( type ) { - case '=': - *and &= ~(groups); - /* fall through */ - case '+': - *or |= mode & groups; - break; - case '-': - *and &= ~(mode & groups); - *or &= *and; + if (stopIt==TRUE) break; + argv++; + } + + if (argc == 0 || *argv == NULL) { + error_msg(too_few_args); + } + + if (whichApp == CHMOD_APP) { + if (theMode==NULL) + theMode = *argv; + } else { + + /* Find the selected group */ + if (whichApp == CHGRP_APP) { + groupName = *argv; + gid = strtoul(groupName, &p, 10); /* maybe it's already numeric */ + if (groupName == p) + gid = my_getgrnam(groupName); + if (gid == -1) + goto bad_group; + } else { + groupName = strchr(*argv, '.'); + if (groupName == NULL) + groupName = strchr(*argv, ':'); + if (groupName) { + *groupName++ = '\0'; + gid = strtoul(groupName, &p, 10); + if (groupName == p) + gid = my_getgrnam(groupName); + if (gid == -1) + goto bad_group; + } else + gid = -1; } - } while ( c == ',' ); - return (TRUE); -} -int chmod_chown_chgrp_main(int argc, char **argv) -{ - struct group *grp; - struct passwd *pwd; - int recursiveFlag=FALSE; - char *groupName; - mode_t andWithMode = S_ISVTX|S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO; - mode_t orWithMode = 0; - - - 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); - } - 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); + /* Find the selected user (if appropriate) */ + if (whichApp == CHOWN_APP) { + uid = strtoul(*argv, &p, 10); /* if numeric ... */ + if (*argv == p) + uid = my_getpwnam(*argv); + if (uid == -1) { + error_msg_and_die( "unknown user name: %s", *argv); + } + } } - 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); + + /* Ok, ready to do the deed now */ + if (argc < 1) { + error_msg_and_die(too_few_args); } - 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; + while (argc-- > 1) { + if (recursive_action (*(++argv), recursiveFlag, FALSE, FALSE, + fileAction, fileAction, NULL) == FALSE) + return EXIT_FAILURE; } - } - - /* 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); + return EXIT_SUCCESS; + + bad_group: + error_msg_and_die( "unknown group name: %s", groupName); } +/* +Local Variables: +c-file-style: "linux" +c-basic-offset: 4 +tab-width: 4 +End: +*/