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|
--test-opts in combination with --all mounts only those filesystems
with options matching the given set of options.
Note that the semantic of the inverting "no" prefix differs from
--types: While --types=nonfs,ufs means neither nfs nor ufs,
--test-opts=nofoo,bar means not foo, but bar.
* utils/match-options.h: New file.
* utils/match-options.c: Likewise.
(test_opts): New variable.
(test_opts_len): Likewise.
(match_options): New function.
* utils/mount.c (parse_opt): Handle -O, --test-opts.
(main): Use match_options as filter.
---
utils/Makefile | 5 ++--
utils/match-options.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++
utils/match-options.h | 33 ++++++++++++++++++++++++
utils/mount.c | 19 ++++++++++++--
4 files changed, 121 insertions(+), 4 deletions(-)
create mode 100644 utils/match-options.c
create mode 100644 utils/match-options.h
diff --git a/utils/Makefile b/utils/Makefile
index e3bed0b..6975fb5 100644
--- a/utils/Makefile
+++ b/utils/Makefile
@@ -28,7 +28,8 @@ SRCS = shd.c ps.c settrans.c syncfs.c showtrans.c addauth.c rmauth.c \
uptime.sh psout.c ids.c vmstat.c portinfo.c devprobe.c vminfo.c \
parse.c frobauth.c frobauth-mod.c setauth.c pids.c nonsugid.c \
unsu.c ftpcp.c ftpdir.c storeread.c storecat.c msgport.c \
- rpctrace.c mount.c gcore.c fakeauth.c fakeroot.sh remap.sh
+ rpctrace.c mount.c gcore.c fakeauth.c fakeroot.sh remap.sh \
+ match-options.c
OBJS = $(filter-out %.sh,$(SRCS:.c=.o))
HURDLIBS = ps ihash store fshelp ports ftpconn shouldbeinlibc
@@ -72,7 +73,7 @@ fakeauth-CPPFLAGS = -I$(srcdir)/../auth
authServer-CPPFLAGS = -I$(srcdir)/../auth
auth_requestUser-CPPFLAGS = -I$(srcdir)/../auth
-mount: ../sutils/fstab.o ../sutils/clookup.o \
+mount: ../sutils/fstab.o ../sutils/clookup.o match-options.o \
$(foreach L,fshelp ports,../lib$L/lib$L.a)
../sutils/fstab.o ../sutils/clookup.o: FORCE
$(MAKE) -C $(@D) $(@F)
diff --git a/utils/match-options.c b/utils/match-options.c
new file mode 100644
index 0000000..11fc9dc
--- /dev/null
+++ b/utils/match-options.c
@@ -0,0 +1,68 @@
+/* Common functionality for the --test-opts flag of mount and umount.
+
+ Copyright (C) 2013 Free Software Foundation, Inc.
+ Written by Justus Winter <4winter@informatik.uni-hamburg.de>
+
+ This file is part of the GNU Hurd.
+
+ The GNU Hurd is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ The GNU Hurd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <argz.h>
+#include <error.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "match-options.h"
+
+char *test_opts;
+size_t test_opts_len;
+
+int
+match_options (struct mntent *mntent)
+{
+ char *opts;
+ size_t opts_len;
+
+ error_t err = argz_create_sep (mntent->mnt_opts, ',', &opts, &opts_len);
+ if (err)
+ error (3, err, "parsing mount options failed");
+
+ for (char *test = test_opts;
+ test; test = argz_next (test_opts, test_opts_len, test))
+ {
+ char *needle = test;
+ int inverse = strncmp("no", needle, 2) == 0;
+ if (inverse)
+ needle += 2;
+
+ int match = 0;
+ for (char *opt = opts; opt; opt = argz_next (opts, opts_len, opt))
+ {
+ if (strcmp (opt, needle) == 0) {
+ if (inverse)
+ return 0; /* foo in opts, nofoo in test_opts. */
+
+ /* foo in opts, foo in test_opts, record match. */
+ match = 1;
+ }
+ }
+
+ if (! inverse && ! match)
+ return 0; /* No foo in opts, but foo in test_opts. */
+ }
+
+ /* If no conflicting test_opt was encountered, return success. */
+ return 1;
+}
diff --git a/utils/match-options.h b/utils/match-options.h
new file mode 100644
index 0000000..ea7ae70
--- /dev/null
+++ b/utils/match-options.h
@@ -0,0 +1,33 @@
+/* Common functionality for the --test-opts flag of mount and umount.
+
+ Copyright (C) 2013 Free Software Foundation, Inc.
+ Written by Justus Winter <4winter@informatik.uni-hamburg.de>
+
+ This file is part of the GNU Hurd.
+
+ The GNU Hurd is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ The GNU Hurd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <mntent.h>
+
+extern char *test_opts;
+extern size_t test_opts_len;
+
+/* Check whether the given mount entry matches the given set of
+ options.
+
+ Returns 0 if foo is in the options vector but nofoo is in test_opts.
+ Returns 0 if foo is in test_opts but foo is not in the options vector. */
+int
+match_options (struct mntent *mntent);
diff --git a/utils/mount.c b/utils/mount.c
index f8928f1..73a7539 100644
--- a/utils/mount.c
+++ b/utils/mount.c
@@ -29,6 +29,8 @@
#include <hurd/fshelp.h>
#include <hurd/paths.h>
+#include "match-options.h"
+
#define SEARCH_FMTS _HURD "%sfs\0" _HURD "%s"
#define DEFAULT_FSTYPE "ext2"
@@ -57,6 +59,8 @@ static const struct argp_option argp_opts[] =
{"remount", 0, 0, OPTION_ALIAS},
{"verbose", 'v', 0, 0, "Give more detailed information"},
{"no-mtab", 'n', 0, 0, "Do not update /etc/mtab"},
+ {"test-opts", 'O', "OPTIONS", 0,
+ "Only mount fstab entries matching the given set of options"},
{"fake", 'f', 0, 0, "Do not actually mount, just pretend"},
{0, 0}
};
@@ -122,6 +126,12 @@ parse_opt (int key, char *arg, struct argp_state *state)
fake = 1;
break;
+ case 'O':
+ err = argz_create_sep (arg, ',', &test_opts, &test_opts_len);
+ if (err)
+ argp_failure (state, 100, ENOMEM, "%s", arg);
+ break;
+
case ARGP_KEY_ARG:
if (mountpoint == 0) /* One arg: mountpoint */
mountpoint = arg;
@@ -615,8 +625,13 @@ main (int argc, char **argv)
case mount:
for (fs = fstab->entries; fs; fs = fs->next)
{
- if (fstab_params.do_all && hasmntopt (&fs->mntent, MNTOPT_NOAUTO))
- continue;
+ if (fstab_params.do_all) {
+ if (hasmntopt (&fs->mntent, MNTOPT_NOAUTO))
+ continue;
+
+ if (! match_options (&fs->mntent))
+ continue;
+ }
err |= do_mount (fs, remount);
}
break;
--
1.7.10.4
|
