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/* chgrp.c - Change user and group ownership
*
* Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org>
*
* See http://opengroup.org/onlinepubs/9699919799/utilities/chown.html
* See http://opengroup.org/onlinepubs/9699919799/utilities/chgrp.html
USE_CHGRP(NEWTOY(chgrp, "<2h(no-dereference)PLHRfv[-HLP]", TOYFLAG_BIN))
USE_CHOWN(OLDTOY(chown, chgrp, TOYFLAG_BIN))
config CHGRP
bool "chgrp"
default y
help
usage: chgrp/chown [-RHLP] [-fvh] GROUP FILE...
Change group of one or more files.
-f Suppress most error messages
-h Change symlinks instead of what they point to
-R Recurse into subdirectories (implies -h)
-H With -R change target of symlink, follow command line symlinks
-L With -R change target of symlink, follow all symlinks
-P With -R change symlink, do not follow symlinks (default)
-v Verbose
config CHOWN
bool "chown"
default y
help
see: chgrp
*/
#define FOR_chgrp
#define FORCE_FLAGS
#include "toys.h"
GLOBALS(
uid_t owner;
gid_t group;
char *owner_name, *group_name;
int symfollow;
)
static int do_chgrp(struct dirtree *node)
{
int fd, ret, flags = toys.optflags;
// Depth first search
if (!dirtree_notdotdot(node)) return 0;
if ((flags & FLAG_R) && !node->again && S_ISDIR(node->st.st_mode))
return DIRTREE_COMEAGAIN|(DIRTREE_SYMFOLLOW*!!(flags&FLAG_L));
fd = dirtree_parentfd(node);
ret = fchownat(fd, node->name, TT.owner, TT.group,
AT_SYMLINK_NOFOLLOW*(!(flags&(FLAG_L|FLAG_H)) && (flags&(FLAG_h|FLAG_R))));
if (ret || (flags & FLAG_v)) {
char *path = dirtree_path(node, 0);
if (flags & FLAG_v)
xprintf("%s %s%s%s %s\n", toys.which->name, TT.owner_name,
(toys.which->name[2]=='o' && *TT.group_name) ? ":" : "",
TT.group_name, path);
if (ret == -1 && !(toys.optflags & FLAG_f))
perror_msg("'%s' to '%s:%s'", path, TT.owner_name, TT.group_name);
free(path);
}
toys.exitval |= ret;
return 0;
}
void chgrp_main(void)
{
int ischown = toys.which->name[2] == 'o';
char **s, *own;
TT.owner = TT.group = -1;
TT.owner_name = TT.group_name = "";
// Distinguish chown from chgrp
if (ischown) {
char *grp;
own = xstrdup(*toys.optargs);
if ((grp = strchr(own, ':')) || (grp = strchr(own, '.'))) {
*(grp++) = 0;
TT.group_name = grp;
}
if (*own) TT.owner = xgetuid(TT.owner_name = own);
} else TT.group_name = *toys.optargs;
if (TT.group_name && *TT.group_name)
TT.group = xgetgid(TT.group_name);
for (s=toys.optargs+1; *s; s++)
dirtree_flagread(*s, DIRTREE_SYMFOLLOW*!!(toys.optflags&(FLAG_H|FLAG_L)),
do_chgrp);
if (CFG_TOYBOX_FREE && ischown) free(own);
}
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