diff options
| -rw-r--r-- | fs/9p/v9fs.c | 43 |
1 files changed, 34 insertions, 9 deletions
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index 8b7c6be2450..ef966188611 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -78,6 +78,25 @@ static const match_table_t tokens = { {Opt_err, NULL} }; +/* Interpret mount options for cache mode */ +static int get_cache_mode(char *s) +{ + int version = -EINVAL; + + if (!strcmp(s, "loose")) { + version = CACHE_LOOSE; + P9_DPRINTK(P9_DEBUG_9P, "Cache mode: loose\n"); + } else if (!strcmp(s, "fscache")) { + version = CACHE_FSCACHE; + P9_DPRINTK(P9_DEBUG_9P, "Cache mode: fscache\n"); + } else if (!strcmp(s, "none")) { + version = CACHE_NONE; + P9_DPRINTK(P9_DEBUG_9P, "Cache mode: none\n"); + } else + printk(KERN_INFO "9p: Unknown Cache mode %s.\n", s); + return version; +} + /** * v9fs_parse_options - parse mount options into session structure * @v9ses: existing v9fs session information @@ -97,7 +116,7 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) /* setup defaults */ v9ses->afid = ~0; v9ses->debug = 0; - v9ses->cache = 0; + v9ses->cache = CACHE_NONE; #ifdef CONFIG_9P_FSCACHE v9ses->cachetag = NULL; #endif @@ -171,13 +190,13 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) "problem allocating copy of cache arg\n"); goto free_and_return; } + ret = get_cache_mode(s); + if (ret == -EINVAL) { + kfree(s); + goto free_and_return; + } - if (strcmp(s, "loose") == 0) - v9ses->cache = CACHE_LOOSE; - else if (strcmp(s, "fscache") == 0) - v9ses->cache = CACHE_FSCACHE; - else - v9ses->cache = CACHE_NONE; + v9ses->cache = ret; kfree(s); break; @@ -200,9 +219,15 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) } else { v9ses->flags |= V9FS_ACCESS_SINGLE; v9ses->uid = simple_strtoul(s, &e, 10); - if (*e != '\0') - v9ses->uid = ~0; + if (*e != '\0') { + ret = -EINVAL; + printk(KERN_INFO "9p: Unknown access " + "argument %s.\n", s); + kfree(s); + goto free_and_return; + } } + kfree(s); break; |