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Add new option: --reference=FILE.

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This commit is contained in:
Jim Meyering
1997-07-29 03:04:58 +00:00
parent f6e8b41a5f
commit 2ff9982e42
2 changed files with 68 additions and 20 deletions
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src/chgrp.c
+33 -11
View File
@@ -88,6 +88,10 @@ static int changes_only;
/* 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 group ID of this file.
This file must exist. */
static char *reference_file;
/* If nonzero, display usage information and exit. */
static int show_help;
@@ -101,6 +105,7 @@ static struct option const long_options[] =
{"no-dereference", no_argument, 0, 'h'},
{"silent", no_argument, 0, 'f'},
{"quiet", no_argument, 0, 'f'},
{"reference", required_argument, 0, 12},
{"verbose", no_argument, 0, 'v'},
{"help", no_argument, &show_help, 1},
{"version", no_argument, &show_version, 1},
@@ -277,18 +282,23 @@ usage (int status)
program_name);
else
{
printf (_("Usage: %s [OPTION]... GROUP FILE...\n"), program_name);
printf (_("\
Usage: %s [OPTION]... GROUP FILE...\n\
or: %s [OPTION]... --reference=RFILE FILE...\n\
"),
program_name, program_name);
printf (_("\
Change the group membership of each FILE to GROUP.\n\
\n\
-c, --changes like verbose but report only when a change is made\n\
-h, --no-dereference affect symbolic links instead of any referenced file\n\
(available only on systems with lchown system call)\n\
-f, --silent, --quiet suppress most error messages\n\
-R, --recursive change files and directories recursively\n\
-v, --verbose output a diagnostic for every file processed\n\
--help display this help and exit\n\
--version output version information and exit\n\
-c, --changes like verbose but report only when a change is made\n\
-h, --no-dereference affect symbolic links instead of any referenced file\n\
(available only on systems with lchown system call)\n\
-f, --silent, --quiet suppress most error messages\n\
--reference=RFILE use RFILE's group instead of using a GROUP value\n\
-R, --recursive change files and directories recursively\n\
-v, --verbose output a diagnostic for every file processed\n\
--help display this help and exit\n\
--version output version information and exit\n\
"));
puts (_("\nReport bugs to <fileutils-bugs@gnu.ai.mit.edu>."));
}
@@ -315,6 +325,9 @@ main (int argc, char **argv)
{
case 0:
break;
case 12:
reference_file = optarg;
break;
case 'R':
recurse = 1;
break;
@@ -345,7 +358,7 @@ main (int argc, char **argv)
if (show_help)
usage (0);
if (argc - optind <= 1)
if (argc - optind + (reference_file ? 1 : 0) <= 1)
{
error (0, 0, _("too few arguments"));
usage (1);
@@ -358,7 +371,16 @@ main (int argc, char **argv)
}
#endif
parse_group (argv[optind++], &group);
if (reference_file)
{
struct stat ref_stats;
if (stat (reference_file, &ref_stats))
error (1, errno, "%s", reference_file);
group = ref_stats.st_gid;
}
else
parse_group (argv[optind++], &group);
for (; optind < argc; ++optind)
errors |= change_file_group (argv[optind], group);
src/chown.c
+35 -9
View File
@@ -88,6 +88,10 @@ static char *username;
/* The name of the group to which ownership of the files is being given. */
static 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;
/* If nonzero, display usage information and exit. */
static int show_help;
@@ -101,6 +105,7 @@ static struct option const long_options[] =
{"no-dereference", no_argument, 0, 'h'},
{"quiet", no_argument, 0, 'f'},
{"silent", no_argument, 0, 'f'},
{"reference", required_argument, 0, 12},
{"verbose", no_argument, 0, 'v'},
{"help", no_argument, &show_help, 1},
{"version", no_argument, &show_version, 1},
@@ -233,9 +238,10 @@ usage (int status)
{
printf (_("\
Usage: %s [OPTION]... OWNER[.[GROUP]] FILE...\n\
or: %s [OPTION]... .[GROUP] FILE...\n\
or: %s [OPTION]... .GROUP FILE...\n\
or: %s [OPTION]... --reference=RFILE FILE...\n\
"),
program_name, program_name);
program_name, program_name, program_name);
printf (_("\
Change the owner and/or group of each FILE to OWNER and/or GROUP.\n\
\n\
@@ -244,6 +250,8 @@ Change the owner and/or group of each FILE to OWNER and/or GROUP.\n\
(available only on systems that can change the\n\
ownership of a symlink)\n\
-f, --silent, --quiet suppress most error messages\n\
--reference=RFILE use the owner and group of RFILE instead of using\n\
explicit OWNER.GROUP values\n\
-R, --recursive operate on files and directories recursively\n\
-v, --verbose explain what is being done\n\
--help display this help and exit\n\
@@ -279,6 +287,9 @@ main (int argc, char **argv)
{
case 0:
break;
case 12:
reference_file = optarg;
break;
case 'R':
recurse = 1;
break;
@@ -309,7 +320,7 @@ main (int argc, char **argv)
if (show_help)
usage (0);
if (optind >= argc - 1)
if (argc - optind + (reference_file ? 1 : 0) <= 1)
{
error (0, 0, _("too few arguments"));
usage (1);
@@ -322,13 +333,28 @@ main (int argc, char **argv)
}
#endif
e = parse_user_spec (argv[optind], &user, &group, &username, &groupname);
if (e)
error (1, 0, "%s: %s", argv[optind], e);
if (username == NULL)
username = "";
if (reference_file)
{
struct stat ref_stats;
for (++optind; optind < argc; ++optind)
if (stat (reference_file, &ref_stats))
error (1, errno, "%s", reference_file);
user = ref_stats.st_uid;
group = ref_stats.st_gid;
}
else
{
e = parse_user_spec (argv[optind], &user, &group, &username, &groupname);
if (e)
error (1, 0, "%s: %s", argv[optind], e);
if (username == NULL)
username = "";
optind++;
}
for (; optind < argc; ++optind)
{
strip_trailing_slashes (argv[optind]);
errors |= change_file_owner (argv[optind], user, group);