diff options
| author | Sean Finney <seanius@seanius.net> | 2011-04-11 17:19:33 +0400 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2011-05-19 18:10:55 +0400 |
| commit | 046462abca2576cc1c71f501c148798fac4ea314 (patch) | |
| tree | 1bd1148f9b6534b43767dd42a4b4ea27205c4cc9 /fs | |
| parent | b946845a9dc523c759cae2b6a0f6827486c3221a (diff) | |
| download | linux-046462abca2576cc1c71f501c148798fac4ea314.tar.xz | |
cifs: Simplify handling of submount options in cifs_mount.
With CONFIG_DFS_UPCALL enabled, maintain the submount options in
cifs_sb->mountdata, simplifying the code just a bit as well as making
corner-case allocation problems less likely.
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Sean Finney <seanius@seanius.net>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/connect.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 20c60ddaa5a1..3e20831119a9 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2788,9 +2788,9 @@ build_unc_path_to_root(const struct smb_vol *volume_info, /* * Perform a dfs referral query for a share and (optionally) prefix * - * If a referral is found, mount_data will be set to point at a newly - * allocated string containing updated options for the submount. - * Otherwise it will be left untouched. + * If a referral is found, cifs_sb->mountdata will be (re-)allocated + * to a string containing updated options for the submount. Otherwise it + * will be left untouched. * * Returns the rc from get_dfs_path to the caller, which can be used to * determine whether there were referrals. @@ -2798,7 +2798,7 @@ build_unc_path_to_root(const struct smb_vol *volume_info, static int expand_dfs_referral(int xid, struct cifsSesInfo *pSesInfo, struct smb_vol *volume_info, struct cifs_sb_info *cifs_sb, - char **mount_data, int check_prefix) + int check_prefix) { int rc; unsigned int num_referrals = 0; @@ -2826,11 +2826,14 @@ expand_dfs_referral(int xid, struct cifsSesInfo *pSesInfo, free_dfs_info_array(referrals, num_referrals); kfree(fake_devname); + if (cifs_sb->mountdata != NULL) + kfree(cifs_sb->mountdata); + if (IS_ERR(mdata)) { rc = PTR_ERR(mdata); mdata = NULL; } - *mount_data = mdata; + cifs_sb->mountdata = mdata; } kfree(full_path); return rc; @@ -2853,6 +2856,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, #ifdef CONFIG_CIFS_DFS_UPCALL int referral_walks_count = 0; try_mount_again: + mount_data = cifs_sb->mountdata; /* cleanup activities if we're chasing a referral */ if (referral_walks_count) { @@ -2986,7 +2990,7 @@ remote_path_check: */ if (referral_walks_count == 0) { int refrc = expand_dfs_referral(xid, pSesInfo, volume_info, - cifs_sb, &mount_data, false); + cifs_sb, false); if (!refrc) { referral_walks_count++; goto try_mount_again; @@ -3028,17 +3032,13 @@ remote_path_check: convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb)); - if (mount_data != mount_data_global) - kfree(mount_data); - rc = expand_dfs_referral(xid, pSesInfo, volume_info, cifs_sb, - &mount_data, true); + true); if (!rc) { referral_walks_count++; goto try_mount_again; } - mount_data = NULL; goto mount_fail_check; #else /* No DFS support, return error on mount */ rc = -EOPNOTSUPP; @@ -3072,8 +3072,6 @@ remote_path_check: mount_fail_check: /* on error free sesinfo and tcon struct if needed */ if (rc) { - if (mount_data != mount_data_global) - kfree(mount_data); /* If find_unc succeeded then rc == 0 so we can not end */ /* up accidentally freeing someone elses tcon struct */ if (tcon) |