diff options
| author | Jim Garlick <garlick.jim@gmail.com> | 2011-08-21 00:21:18 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-10-03 11:40:22 -0700 |
| commit | 101e357617f790d36b999dada08c437fd2431c3c (patch) | |
| tree | 4a4c4abfbf50e05efec65926c66a1a037faa0437 | |
| parent | 8bdb14f9c33bb0ad8b37a9465c968ccce4ecda3b (diff) | |
| download | kernel_samsung_espresso10-101e357617f790d36b999dada08c437fd2431c3c.zip kernel_samsung_espresso10-101e357617f790d36b999dada08c437fd2431c3c.tar.gz kernel_samsung_espresso10-101e357617f790d36b999dada08c437fd2431c3c.tar.bz2 | |
fs/9p: Use protocol-defined value for lock/getlock 'type' field.
commit 51b8b4fb32271d39fbdd760397406177b2b0fd36 upstream.
Signed-off-by: Jim Garlick <garlick@llnl.gov>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/9p/vfs_file.c | 34 | ||||
| -rw-r--r-- | include/net/9p/9p.h | 5 |
2 files changed, 32 insertions, 7 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 56907e4..9d6e168 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -169,7 +169,18 @@ static int v9fs_file_do_lock(struct file *filp, int cmd, struct file_lock *fl) /* convert posix lock to p9 tlock args */ memset(&flock, 0, sizeof(flock)); - flock.type = fl->fl_type; + /* map the lock type */ + switch (fl->fl_type) { + case F_RDLCK: + flock.type = P9_LOCK_TYPE_RDLCK; + break; + case F_WRLCK: + flock.type = P9_LOCK_TYPE_WRLCK; + break; + case F_UNLCK: + flock.type = P9_LOCK_TYPE_UNLCK; + break; + } flock.start = fl->fl_start; if (fl->fl_end == OFFSET_MAX) flock.length = 0; @@ -245,7 +256,7 @@ static int v9fs_file_getlock(struct file *filp, struct file_lock *fl) /* convert posix lock to p9 tgetlock args */ memset(&glock, 0, sizeof(glock)); - glock.type = fl->fl_type; + glock.type = P9_LOCK_TYPE_UNLCK; glock.start = fl->fl_start; if (fl->fl_end == OFFSET_MAX) glock.length = 0; @@ -257,17 +268,26 @@ static int v9fs_file_getlock(struct file *filp, struct file_lock *fl) res = p9_client_getlock_dotl(fid, &glock); if (res < 0) return res; - if (glock.type != F_UNLCK) { - fl->fl_type = glock.type; + /* map 9p lock type to os lock type */ + switch (glock.type) { + case P9_LOCK_TYPE_RDLCK: + fl->fl_type = F_RDLCK; + break; + case P9_LOCK_TYPE_WRLCK: + fl->fl_type = F_WRLCK; + break; + case P9_LOCK_TYPE_UNLCK: + fl->fl_type = F_UNLCK; + break; + } + if (glock.type != P9_LOCK_TYPE_UNLCK) { fl->fl_start = glock.start; if (glock.length == 0) fl->fl_end = OFFSET_MAX; else fl->fl_end = glock.start + glock.length - 1; fl->fl_pid = glock.proc_id; - } else - fl->fl_type = F_UNLCK; - + } return res; } diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h index a8d613f..32f67c3 100644 --- a/include/net/9p/9p.h +++ b/include/net/9p/9p.h @@ -344,6 +344,11 @@ enum p9_qid_t { /* Room for readdir header */ #define P9_READDIRHDRSZ 24 +/* 9p2000.L lock type */ +#define P9_LOCK_TYPE_RDLCK 0 +#define P9_LOCK_TYPE_WRLCK 1 +#define P9_LOCK_TYPE_UNLCK 2 + /** * struct p9_str - length prefixed string type * @len: length of the string |