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| author | Yan, Zheng <zyan@redhat.com> | 2016-04-21 11:09:55 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-05-26 01:15:33 +0200 |
| commit | 3f38495409b613071021fca86629df7ae81820ad (patch) | |
| tree | ce79ca6d4cc1482efb19fdbf06edbd48439edb6c /fs/ceph/super.c | |
| parent | aeda081c5eb3d7668b64e2dc9bfc0bf30ef53632 (diff) | |
| download | linux-3f38495409b613071021fca86629df7ae81820ad.tar.bz2 | |
ceph: report mount root in session metadata
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'fs/ceph/super.c')
| -rw-r--r-- | fs/ceph/super.c | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/fs/ceph/super.c b/fs/ceph/super.c index d714ab20ad24..91e02481ce06 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -302,6 +302,7 @@ static void destroy_mount_options(struct ceph_mount_options *args) { dout("destroy_mount_options %p\n", args); kfree(args->snapdir_name); + kfree(args->server_path); kfree(args); } @@ -333,14 +334,17 @@ static int compare_mount_options(struct ceph_mount_options *new_fsopt, if (ret) return ret; + ret = strcmp_null(fsopt1->server_path, fsopt2->server_path); + if (ret) + return ret; + return ceph_compare_options(new_opt, fsc->client); } static int parse_mount_options(struct ceph_mount_options **pfsopt, struct ceph_options **popt, int flags, char *options, - const char *dev_name, - const char **path) + const char *dev_name) { struct ceph_mount_options *fsopt; const char *dev_name_end; @@ -386,12 +390,13 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt, */ dev_name_end = strchr(dev_name, '/'); if (dev_name_end) { - /* skip over leading '/' for path */ - *path = dev_name_end + 1; + fsopt->server_path = kstrdup(dev_name_end, GFP_KERNEL); + if (!fsopt->server_path) { + err = -ENOMEM; + goto out; + } } else { - /* path is empty */ dev_name_end = dev_name + strlen(dev_name); - *path = dev_name_end; } err = -EINVAL; dev_name_end--; /* back up to ':' separator */ @@ -401,7 +406,8 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt, goto out; } dout("device name '%.*s'\n", (int)(dev_name_end - dev_name), dev_name); - dout("server path '%s'\n", *path); + if (fsopt->server_path) + dout("server path '%s'\n", fsopt->server_path); *popt = ceph_parse_options(options, dev_name, dev_name_end, parse_fsopt_token, (void *)fsopt); @@ -793,8 +799,7 @@ out: /* * mount: join the ceph cluster, and open root directory. */ -static struct dentry *ceph_real_mount(struct ceph_fs_client *fsc, - const char *path) +static struct dentry *ceph_real_mount(struct ceph_fs_client *fsc) { int err; unsigned long started = jiffies; /* note the start time */ @@ -823,11 +828,12 @@ static struct dentry *ceph_real_mount(struct ceph_fs_client *fsc, goto fail; } - if (path[0] == 0) { + if (!fsc->mount_options->server_path) { root = fsc->sb->s_root; dget(root); } else { - dout("mount opening base mountpoint\n"); + const char *path = fsc->mount_options->server_path + 1; + dout("mount opening path %s\n", path); root = open_root_dentry(fsc, path, started); if (IS_ERR(root)) { err = PTR_ERR(root); @@ -943,7 +949,6 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type, struct dentry *res; int err; int (*compare_super)(struct super_block *, void *) = ceph_compare_super; - const char *path = NULL; struct ceph_mount_options *fsopt = NULL; struct ceph_options *opt = NULL; @@ -952,7 +957,7 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type, #ifdef CONFIG_CEPH_FS_POSIX_ACL flags |= MS_POSIXACL; #endif - err = parse_mount_options(&fsopt, &opt, flags, data, dev_name, &path); + err = parse_mount_options(&fsopt, &opt, flags, data, dev_name); if (err < 0) { res = ERR_PTR(err); goto out_final; @@ -995,7 +1000,7 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type, } } - res = ceph_real_mount(fsc, path); + res = ceph_real_mount(fsc); if (IS_ERR(res)) goto out_splat; dout("root %p inode %p ino %llx.%llx\n", res, |