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authorNiels de Vos <ndevos@redhat.com>2012-11-09 14:43:38 +0100
committerVijay Bellur <vbellur@redhat.com>2012-11-19 00:49:36 -0800
commit702b2912970e7cc19416aff7d3696d15977efc2f (patch)
tree7acc75db04d042f4178506c2b1d0c14ee1faac0d /contrib
parent474d3e08313acb74633a22e970326fb98b9122d3 (diff)
fuse: handle mountflags properly
The internal mount API had no access to the generic mountflags used by mount(2). Thus the "ro" mount option that needs to be passed down to mount(2) as as a mountflag was incorrectly mangled into the fuse-specific mount parameter string (cf. http://review.gluster.com/655). This commit fixes the internal API and the "ro" issue. It also adds a check for the "rw" and "ro" mount options in tests/basic/mount.t. Thanks to Csaba Henk (csaba@) for suggestions and proposing an updated patch. Change-Id: I7f7bf49ae44d148f5c16f10736a0e412fb8f5e67 BUG: 853895 Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/4163 Reviewed-by: Csaba Henk <csaba@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
Diffstat (limited to 'contrib')
-rw-r--r--contrib/fuse-include/fuse-mount.h3
-rw-r--r--contrib/fuse-lib/mount.c32
2 files changed, 25 insertions, 10 deletions
diff --git a/contrib/fuse-include/fuse-mount.h b/contrib/fuse-include/fuse-mount.h
index 7a3756d..9358ac8 100644
--- a/contrib/fuse-include/fuse-mount.h
+++ b/contrib/fuse-include/fuse-mount.h
@@ -8,5 +8,6 @@
*/
void gf_fuse_unmount (const char *mountpoint, int fd);
-int gf_fuse_mount (const char *mountpoint, char *fsname, char *mnt_param,
+int gf_fuse_mount (const char *mountpoint, char *fsname,
+ unsigned long mountflags, char *mnt_param,
pid_t *mtab_pid, int status_fd);
diff --git a/contrib/fuse-lib/mount.c b/contrib/fuse-lib/mount.c
index f02a835..fedde3f 100644
--- a/contrib/fuse-lib/mount.c
+++ b/contrib/fuse-lib/mount.c
@@ -100,7 +100,8 @@ escape (char *s)
}
static int
-fuse_mount_fusermount (const char *mountpoint, char *fsname, char *mnt_param,
+fuse_mount_fusermount (const char *mountpoint, char *fsname,
+ unsigned long mountflags, char *mnt_param,
int fd)
{
int pid = -1;
@@ -124,7 +125,8 @@ fuse_mount_fusermount (const char *mountpoint, char *fsname, char *mnt_param,
return -1;
}
ret = asprintf (&fm_mnt_params,
- "%s,fsname=%s,nonempty,subtype=glusterfs",
+ "%s%s,fsname=%s,nonempty,subtype=glusterfs",
+ (mountflags & MS_RDONLY) ? "ro," : "",
mnt_param, efsname);
FREE (efsname);
if (ret == -1) {
@@ -169,7 +171,8 @@ fuse_mount_fusermount (const char *mountpoint, char *fsname, char *mnt_param,
}
static int
-fuse_mount_sys (const char *mountpoint, char *fsname, char *mnt_param, int fd)
+fuse_mount_sys (const char *mountpoint, char *fsname,
+ unsigned long mountflags, char *mnt_param, int fd)
{
int ret = -1;
unsigned mounted = 0;
@@ -185,7 +188,7 @@ fuse_mount_sys (const char *mountpoint, char *fsname, char *mnt_param, int fd)
goto out;
}
- ret = mount (source, mountpoint, fstype, 0,
+ ret = mount (source, mountpoint, fstype, mountflags,
mnt_param_mnt);
if (ret == -1 && errno == ENODEV) {
/* fs subtype support was added by 79c0b2df aka
@@ -209,6 +212,7 @@ fuse_mount_sys (const char *mountpoint, char *fsname, char *mnt_param, int fd)
#ifndef __NetBSD__
if (geteuid () == 0) {
char *newmnt = fuse_mnt_resolve_path ("fuse", mountpoint);
+ char *mnt_param_mtab = NULL;
if (!newmnt) {
ret = -1;
@@ -216,8 +220,17 @@ fuse_mount_sys (const char *mountpoint, char *fsname, char *mnt_param, int fd)
goto out;
}
- ret = fuse_mnt_add_mount ("fuse", source, newmnt, fstype,
- mnt_param);
+ ret = asprintf (&mnt_param_mtab, "%s%s",
+ mountflags & MS_RDONLY ? "ro," : "",
+ mnt_param);
+ if (ret == -1)
+ GFFUSE_LOGERR ("Out of memory");
+ else {
+ ret = fuse_mnt_add_mount ("fuse", source, newmnt,
+ fstype, mnt_param_mtab);
+ FREE (mnt_param_mtab);
+ }
+
FREE (newmnt);
if (ret == -1) {
GFFUSE_LOGERR ("failed to add mtab entry");
@@ -240,7 +253,8 @@ out:
}
int
-gf_fuse_mount (const char *mountpoint, char *fsname, char *mnt_param,
+gf_fuse_mount (const char *mountpoint, char *fsname,
+ unsigned long mountflags, char *mnt_param,
pid_t *mnt_pid, int status_fd)
{
int fd = -1;
@@ -268,14 +282,14 @@ gf_fuse_mount (const char *mountpoint, char *fsname, char *mnt_param,
exit (pid == -1 ? 1 : 0);
}
- ret = fuse_mount_sys (mountpoint, fsname, mnt_param, fd);
+ ret = fuse_mount_sys (mountpoint, fsname, mountflags, mnt_param, fd);
if (ret == -1) {
gf_log ("glusterfs-fuse", GF_LOG_INFO,
"direct mount failed (%s), "
"retry to mount via fusermount",
strerror (errno));
- ret = fuse_mount_fusermount (mountpoint, fsname,
+ ret = fuse_mount_fusermount (mountpoint, fsname, mountflags,
mnt_param, fd);
}