[PATCH 6/6] fsconfig: rename FSCONFIG_CMD_CREATE to FSCONFIG_CMD_OBTAIN

From: Miklos Szeredi
Date: Thu Sep 20 2018 - 11:12:35 EST


The old name strongly implies that a new superblock will be created from
the fs_context. This is not true: filesystems are free to retuse an
existing superblock and return that (for good reason).

To avoid confusion, rename this command to something more appropriate.

Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
---
fs/fsopen.c | 6 +++---
include/uapi/linux/fs.h | 2 +-
samples/vfs/test-fsmount.c | 2 +-
3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/fsopen.c b/fs/fsopen.c
index 9ead9220e2cb..bf1ff70b1fe2 100644
--- a/fs/fsopen.c
+++ b/fs/fsopen.c
@@ -311,7 +311,7 @@ static int vfs_fsconfig_action(struct fs_context *fc, enum fsconfig_command cmd)
int ret = -EINVAL;

switch (cmd) {
- case FSCONFIG_CMD_CREATE:
+ case FSCONFIG_CMD_OBTAIN:
if (fc->phase != FS_CONTEXT_CREATE_PARAMS)
return -EBUSY;
fc->phase = FS_CONTEXT_CREATING;
@@ -434,7 +434,7 @@ SYSCALL_DEFINE5(fsconfig,
if (!_key || _value || aux < 0)
return -EINVAL;
break;
- case FSCONFIG_CMD_CREATE:
+ case FSCONFIG_CMD_OBTAIN:
case FSCONFIG_CMD_RECONFIGURE:
if (_key || _value || aux)
return -EINVAL;
@@ -523,7 +523,7 @@ SYSCALL_DEFINE5(fsconfig,
ret = mutex_lock_interruptible(&fc->uapi_mutex);
if (ret == 0) {
switch (cmd) {
- case FSCONFIG_CMD_CREATE:
+ case FSCONFIG_CMD_OBTAIN:
case FSCONFIG_CMD_RECONFIGURE:
ret = vfs_fsconfig_action(fc, cmd);
break;
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index 7f01503a9e9b..169642bb2656 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -366,7 +366,7 @@ enum fsconfig_command {
FSCONFIG_SET_PATH = 3, /* Set parameter, supplying an object by path */
FSCONFIG_SET_PATH_EMPTY = 4, /* Set parameter, supplying an object by (empty) path */
FSCONFIG_SET_FD = 5, /* Set parameter, supplying an object by fd */
- FSCONFIG_CMD_CREATE = 6, /* Invoke superblock creation */
+ FSCONFIG_CMD_OBTAIN = 6, /* Obtain new or existing superblock */
FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */
};

diff --git a/samples/vfs/test-fsmount.c b/samples/vfs/test-fsmount.c
index 74124025ade0..a161dc530a91 100644
--- a/samples/vfs/test-fsmount.c
+++ b/samples/vfs/test-fsmount.c
@@ -101,7 +101,7 @@ int main(int argc, char *argv[])
}

E_fsconfig(fsfd, FSCONFIG_SET_STRING, "source", "#grand.central.org:root.cell.", 0);
- E_fsconfig(fsfd, FSCONFIG_CMD_CREATE, NULL, NULL, 0);
+ E_fsconfig(fsfd, FSCONFIG_CMD_OBTAIN, NULL, NULL, 0);

mfd = fsmount(fsfd, 0, MS_RDONLY);
if (mfd < 0)
--
2.14.3