#include <config.h>
#include <stdio.h>
#include <sys/types.h>
-#include <pwd.h>
-#include <grp.h>
#include <getopt.h>
#include "system.h"
#include "lchown.h"
#include "quote.h"
#include "savedir.h"
+#include "chown-core.h"
/* The official name of this program (e.g., no `g' prefix). */
#define PROGRAM_NAME "chown"
char *parse_user_spec ();
void strip_trailing_slashes ();
-enum Change_status
-{
- CH_NOT_APPLIED,
- CH_SUCCEEDED,
- CH_FAILED,
- CH_NO_CHANGE_REQUESTED
-};
-
-enum Verbosity
-{
- /* Print a message for each file that is processed. */
- V_high,
-
- /* Print a message for each file whose attributes we change. */
- V_changes_only,
-
- /* Do not be verbose. This is the default. */
- V_off
-};
-
-static int change_dir_owner PARAMS ((const char *dir, uid_t user, gid_t group,
- uid_t old_user, gid_t old_group,
- const struct stat *statp));
-
/* The name the program was run with. */
char *program_name;
-/* If nonzero, and the systems has support for it, change the ownership
- of symbolic links rather than any files they point to. */
-static int change_symlinks = 1;
-
-/* If nonzero, change the ownership of directories recursively. */
-static int recurse;
-
-/* If nonzero, force silence (no error messages). */
-static int force_silent;
-
-/* Level of verbosity. */
-static enum Verbosity verbosity = V_off;
-
-/* The name of the user to which ownership of the files is being given. */
-static char *username;
-
-/* The name of the group to which ownership of the files is being given. */
-static const char *groupname;
-
/* The argument to the --reference option. Use the owner and group IDs
of this file. This file must exist. */
static char *reference_file;
{0, 0, 0, 0}
};
-/* Tell the user how/if the user and group of FILE have been changed.
- CHANGED describes what (if anything) has happened. */
-
-static void
-describe_change (const char *file, enum Change_status changed)
-{
- const char *fmt;
-
- if (changed == CH_NOT_APPLIED)
- {
- printf (_("neither symbolic link %s nor referent has been changed\n"),
- quote (file));
- return;
- }
-
- switch (changed)
- {
- case CH_SUCCEEDED:
- fmt = _("owner of %s changed to ");
- break;
- case CH_FAILED:
- fmt = _("failed to change owner of %s to ");
- break;
- case CH_NO_CHANGE_REQUESTED:
- fmt = _("owner of %s retained as ");
- break;
- default:
- abort ();
- }
- printf (fmt, file);
- if (groupname)
- printf ("%s.%s\n", username, groupname);
- else
- printf ("%s\n", username);
-}
-
-/* Change the ownership of FILE to UID USER and GID GROUP
- provided it presently has UID OLDUSER and GID OLDGROUP.
- If it is a directory and -R is given, recurse.
- Return 0 if successful, 1 if errors occurred. */
-
-static int
-change_file_owner (int cmdline_arg, const char *file, uid_t user, gid_t group,
- uid_t old_user, gid_t old_group)
-{
- struct stat file_stats;
- uid_t newuser;
- gid_t newgroup;
- int errors = 0;
-
- if (lstat (file, &file_stats))
- {
- if (force_silent == 0)
- error (0, errno, _("getting attributes of %s"), quote (file));
- return 1;
- }
-
- if ((old_user == (uid_t) -1 || file_stats.st_uid == old_user) &&
- (old_group == (gid_t) -1 || file_stats.st_gid == old_group))
- {
- newuser = user == (uid_t) -1 ? file_stats.st_uid : user;
- newgroup = group == (gid_t) -1 ? file_stats.st_gid : group;
- if (newuser != file_stats.st_uid || newgroup != file_stats.st_gid)
- {
- int fail;
- int symlink_changed = 1;
- int saved_errno;
-
- if (S_ISLNK (file_stats.st_mode) && change_symlinks)
- {
- fail = lchown (file, newuser, newgroup);
-
- /* Ignore the failure if it's due to lack of support (ENOSYS)
- and this is not a command line argument. */
- if (!cmdline_arg && fail && errno == ENOSYS)
- {
- fail = 0;
- symlink_changed = 0;
- }
- }
- else
- {
- fail = chown (file, newuser, newgroup);
- }
- saved_errno = errno;
-
- if (verbosity == V_high || (verbosity == V_changes_only && !fail))
- {
- enum Change_status ch_status = (! symlink_changed
- ? CH_NOT_APPLIED
- : (fail
- ? CH_FAILED : CH_SUCCEEDED));
- describe_change (file, ch_status);
- }
-
- if (fail)
- {
- if (force_silent == 0)
- error (0, saved_errno, _("changing ownership of %s"),
- quote (file));
- errors = 1;
- }
- else
- {
- /* The change succeeded. On some systems, the chown function
- resets the `special' permission bits. When run by a
- `privileged' user, this program must ensure that at least
- the set-uid and set-group ones are still set. */
- if (file_stats.st_mode & ~S_IRWXUGO
- /* If this is a symlink and we changed *it*, then skip it. */
- && ! (S_ISLNK (file_stats.st_mode) && change_symlinks))
- {
- if (chmod (file, file_stats.st_mode))
- {
- error (0, saved_errno,
- _("unable to restore permissions of %s"),
- quote (file));
- fail = 1;
- }
- }
- }
- }
- else if (verbosity == V_high)
- {
- describe_change (file, CH_NO_CHANGE_REQUESTED);
- }
- }
-
- if (recurse && S_ISDIR (file_stats.st_mode))
- errors |= change_dir_owner (file, user, group,
- old_user, old_group, &file_stats);
- return errors;
-}
-
-/* Recursively change the ownership of the files in directory DIR
- to UID USER and GID GROUP.
- STATP points to the results of lstat on DIR.
- Return 0 if successful, 1 if errors occurred. */
-
-static int
-change_dir_owner (const char *dir, uid_t user, gid_t group,
- uid_t old_user, gid_t old_group,
- const struct stat *statp)
-{
- char *name_space, *namep;
- char *path; /* Full path of each entry to process. */
- unsigned dirlength; /* Length of `dir' and '\0'. */
- unsigned filelength; /* Length of each pathname to process. */
- unsigned pathlength; /* Bytes allocated for `path'. */
- int errors = 0;
-
- name_space = savedir (dir, statp->st_size);
- if (name_space == NULL)
- {
- if (force_silent == 0)
- error (0, errno, "%s", quote (dir));
- return 1;
- }
-
- dirlength = strlen (dir) + 1; /* + 1 is for the trailing '/'. */
- pathlength = dirlength + 1;
- /* Give `path' a dummy value; it will be reallocated before first use. */
- path = xmalloc (pathlength);
- strcpy (path, dir);
- path[dirlength - 1] = '/';
-
- for (namep = name_space; *namep; namep += filelength - dirlength)
- {
- filelength = dirlength + strlen (namep) + 1;
- if (filelength > pathlength)
- {
- pathlength = filelength * 2;
- path = xrealloc (path, pathlength);
- }
- strcpy (path + dirlength, namep);
- errors |= change_file_owner (0, path, user, group, old_user, old_group);
- }
- free (path);
- free (name_space);
- return errors;
-}
-
void
usage (int status)
{
gid_t group = (uid_t) -1; /* New gid; -1 if not to be changed. */
uid_t old_user = (uid_t) -1; /* Old uid; -1 if unrestricted. */
gid_t old_group = (uid_t) -1; /* Old gid; -1 if unrestricted. */
+ struct Chown_option chopt;
int errors = 0;
int optc;
atexit (close_stdout);
- recurse = force_silent = 0;
+ chopt_init (&chopt);
while ((optc = getopt_long (argc, argv, "Rcfhv", long_options, NULL)) != -1)
{
reference_file = optarg;
break;
case DEREFERENCE_OPTION:
- change_symlinks = 0;
+ chopt.change_symlinks = 0;
break;
case FROM_OPTION:
{
break;
}
case 'R':
- recurse = 1;
+ chopt.recurse = 1;
break;
case 'c':
- verbosity = V_changes_only;
+ chopt.verbosity = V_changes_only;
break;
case 'f':
- force_silent = 1;
+ chopt.force_silent = 1;
break;
case 'h':
- change_symlinks = 1;
+ chopt.change_symlinks = 1;
break;
case 'v':
- verbosity = V_high;
+ chopt.verbosity = V_high;
break;
case_GETOPT_HELP_CHAR;
case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
if (stat (reference_file, &ref_stats))
error (1, errno, _("getting attributes of %s"), quote (reference_file));
- user = ref_stats.st_uid;
+ user = ref_stats.st_uid;
+ chopt.user_name = uid_to_name (ref_stats.st_uid);
group = ref_stats.st_gid;
+ chopt.group_name = gid_to_name (ref_stats.st_gid);
}
else
{
const char *e = parse_user_spec (argv[optind], &user, &group,
- &username, &groupname);
+ &chopt.user_name, &chopt.group_name);
if (e)
error (1, 0, "%s: %s", argv[optind], e);
- if (username == NULL)
- username = "";
+ if (chopt.user_name == NULL)
+ chopt.user_name = "";
optind++;
}
{
strip_trailing_slashes (argv[optind]);
errors |= change_file_owner (1, argv[optind], user, group,
- old_user, old_group);
+ old_user, old_group, &chopt);
}
+ chopt_free (&chopt);
+
exit (errors);
}
projects / thirdparty / coreutils.git / commitdiff
