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path: root/fs/cifs/fs_context.c
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Diffstat (limited to 'fs/cifs/fs_context.c')
-rw-r--r--fs/cifs/fs_context.c136
1 files changed, 111 insertions, 25 deletions
diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c
index 076bcadc756a..892f51a21278 100644
--- a/fs/cifs/fs_context.c
+++ b/fs/cifs/fs_context.c
@@ -140,6 +140,8 @@ const struct fs_parameter_spec smb3_fs_parameters[] = {
fsparam_u32("rsize", Opt_rsize),
fsparam_u32("wsize", Opt_wsize),
fsparam_u32("actimeo", Opt_actimeo),
+ fsparam_u32("acdirmax", Opt_acdirmax),
+ fsparam_u32("acregmax", Opt_acregmax),
fsparam_u32("echo_interval", Opt_echo_interval),
fsparam_u32("max_credits", Opt_max_credits),
fsparam_u32("handletimeout", Opt_handletimeout),
@@ -148,7 +150,6 @@ const struct fs_parameter_spec smb3_fs_parameters[] = {
/* Mount options which take string value */
fsparam_string("source", Opt_source),
- fsparam_string("unc", Opt_source),
fsparam_string("user", Opt_user),
fsparam_string("username", Opt_user),
fsparam_string("pass", Opt_pass),
@@ -175,8 +176,15 @@ const struct fs_parameter_spec smb3_fs_parameters[] = {
fsparam_flag_no("exec", Opt_ignore),
fsparam_flag_no("dev", Opt_ignore),
fsparam_flag_no("mand", Opt_ignore),
+ fsparam_flag_no("auto", Opt_ignore),
fsparam_string("cred", Opt_ignore),
fsparam_string("credentials", Opt_ignore),
+ /*
+ * UNC and prefixpath is now extracted from Opt_source
+ * in the new mount API so we can just ignore them going forward.
+ */
+ fsparam_string("unc", Opt_ignore),
+ fsparam_string("prefixpath", Opt_ignore),
{}
};
@@ -311,6 +319,7 @@ smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx
new_ctx->password = NULL;
new_ctx->domainname = NULL;
new_ctx->UNC = NULL;
+ new_ctx->source = NULL;
new_ctx->iocharset = NULL;
/*
@@ -321,6 +330,7 @@ smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx
DUP_CTX_STR(username);
DUP_CTX_STR(password);
DUP_CTX_STR(UNC);
+ DUP_CTX_STR(source);
DUP_CTX_STR(domainname);
DUP_CTX_STR(nodename);
DUP_CTX_STR(iocharset);
@@ -389,7 +399,7 @@ cifs_parse_smb_version(char *value, struct smb3_fs_context *ctx, bool is_smb3)
ctx->vals = &smb3any_values;
break;
case Smb_default:
- ctx->ops = &smb30_operations; /* currently identical with 3.0 */
+ ctx->ops = &smb30_operations;
ctx->vals = &smbdefault_values;
break;
default:
@@ -399,6 +409,37 @@ cifs_parse_smb_version(char *value, struct smb3_fs_context *ctx, bool is_smb3)
return 0;
}
+int smb3_parse_opt(const char *options, const char *key, char **val)
+{
+ int rc = -ENOENT;
+ char *opts, *orig, *p;
+
+ orig = opts = kstrdup(options, GFP_KERNEL);
+ if (!opts)
+ return -ENOMEM;
+
+ while ((p = strsep(&opts, ","))) {
+ char *nval;
+
+ if (!*p)
+ continue;
+ if (strncasecmp(p, key, strlen(key)))
+ continue;
+ nval = strchr(p, '=');
+ if (nval) {
+ if (nval == p)
+ continue;
+ *nval++ = 0;
+ *val = kstrndup(nval, strlen(nval), GFP_KERNEL);
+ rc = !*val ? -ENOMEM : 0;
+ goto out;
+ }
+ }
+out:
+ kfree(orig);
+ return rc;
+}
+
/*
* Parse a devname into substrings and populate the ctx->UNC and ctx->prepath
* fields with the result. Returns 0 on success and an error otherwise
@@ -503,20 +544,37 @@ static int smb3_fs_context_parse_monolithic(struct fs_context *fc,
/* BB Need to add support for sep= here TBD */
while ((key = strsep(&options, ",")) != NULL) {
- if (*key) {
- size_t v_len = 0;
- char *value = strchr(key, '=');
-
- if (value) {
- if (value == key)
- continue;
- *value++ = 0;
- v_len = strlen(value);
- }
- ret = vfs_parse_fs_string(fc, key, value, v_len);
- if (ret < 0)
- break;
+ size_t len;
+ char *value;
+
+ if (*key == 0)
+ break;
+
+ /* Check if following character is the deliminator If yes,
+ * we have encountered a double deliminator reset the NULL
+ * character to the deliminator
+ */
+ while (options && options[0] == ',') {
+ len = strlen(key);
+ strcpy(key + len, options);
+ options = strchr(options, ',');
+ if (options)
+ *options++ = 0;
}
+
+
+ len = 0;
+ value = strchr(key, '=');
+ if (value) {
+ if (value == key)
+ continue;
+ *value++ = 0;
+ len = strlen(value);
+ }
+
+ ret = vfs_parse_fs_string(fc, key, value, len);
+ if (ret < 0)
+ break;
}
return ret;
@@ -531,7 +589,7 @@ static int smb3_fs_context_validate(struct fs_context *fc)
if (ctx->rdma && ctx->vals->protocol_id < SMB30_PROT_ID) {
cifs_dbg(VFS, "SMB Direct requires Version >=3.0\n");
- return -1;
+ return -EOPNOTSUPP;
}
#ifndef CONFIG_KEYS
@@ -554,7 +612,7 @@ static int smb3_fs_context_validate(struct fs_context *fc)
/* make sure UNC has a share name */
if (strlen(ctx->UNC) < 3 || !strchr(ctx->UNC + 3, '\\')) {
cifs_dbg(VFS, "Malformed UNC. Unable to find share name.\n");
- return -1;
+ return -ENOENT;
}
if (!ctx->got_ip) {
@@ -568,7 +626,7 @@ static int smb3_fs_context_validate(struct fs_context *fc)
if (!cifs_convert_address((struct sockaddr *)&ctx->dstaddr,
&ctx->UNC[2], len)) {
pr_err("Unable to determine destination address\n");
- return -1;
+ return -EHOSTUNREACH;
}
}
@@ -699,6 +757,7 @@ static int smb3_reconfigure(struct fs_context *fc)
* just use what we already have in cifs_sb->ctx.
*/
STEAL_STRING(cifs_sb, ctx, UNC);
+ STEAL_STRING(cifs_sb, ctx, source);
STEAL_STRING(cifs_sb, ctx, username);
STEAL_STRING(cifs_sb, ctx, password);
STEAL_STRING(cifs_sb, ctx, domainname);
@@ -889,12 +948,31 @@ static int smb3_fs_context_parse_param(struct fs_context *fc,
ctx->wsize = result.uint_32;
ctx->got_wsize = true;
break;
+ case Opt_acregmax:
+ ctx->acregmax = HZ * result.uint_32;
+ if (ctx->acregmax > CIFS_MAX_ACTIMEO) {
+ cifs_dbg(VFS, "acregmax too large\n");
+ goto cifs_parse_mount_err;
+ }
+ break;
+ case Opt_acdirmax:
+ ctx->acdirmax = HZ * result.uint_32;
+ if (ctx->acdirmax > CIFS_MAX_ACTIMEO) {
+ cifs_dbg(VFS, "acdirmax too large\n");
+ goto cifs_parse_mount_err;
+ }
+ break;
case Opt_actimeo:
- ctx->actimeo = HZ * result.uint_32;
- if (ctx->actimeo > CIFS_MAX_ACTIMEO) {
- cifs_dbg(VFS, "attribute cache timeout too large\n");
+ if (HZ * result.uint_32 > CIFS_MAX_ACTIMEO) {
+ cifs_dbg(VFS, "timeout too large\n");
goto cifs_parse_mount_err;
}
+ if ((ctx->acdirmax != CIFS_DEF_ACTIMEO) ||
+ (ctx->acregmax != CIFS_DEF_ACTIMEO)) {
+ cifs_dbg(VFS, "actimeo ignored since acregmax or acdirmax specified\n");
+ break;
+ }
+ ctx->acdirmax = ctx->acregmax = HZ * result.uint_32;
break;
case Opt_echo_interval:
ctx->echo_interval = result.uint_32;
@@ -941,6 +1019,11 @@ static int smb3_fs_context_parse_param(struct fs_context *fc,
cifs_dbg(VFS, "Unknown error parsing devname\n");
goto cifs_parse_mount_err;
}
+ ctx->source = kstrdup(param->string, GFP_KERNEL);
+ if (ctx->source == NULL) {
+ cifs_dbg(VFS, "OOM when copying UNC string\n");
+ goto cifs_parse_mount_err;
+ }
fc->source = kstrdup(param->string, GFP_KERNEL);
if (fc->source == NULL) {
cifs_dbg(VFS, "OOM when copying UNC string\n");
@@ -1263,7 +1346,7 @@ static int smb3_fs_context_parse_param(struct fs_context *fc,
return 0;
cifs_parse_mount_err:
- return 1;
+ return -EINVAL;
}
int smb3_init_fs_context(struct fs_context *fc)
@@ -1316,7 +1399,8 @@ int smb3_init_fs_context(struct fs_context *fc)
/* default is to use strict cifs caching semantics */
ctx->strict_io = true;
- ctx->actimeo = CIFS_DEF_ACTIMEO;
+ ctx->acregmax = CIFS_DEF_ACTIMEO;
+ ctx->acdirmax = CIFS_DEF_ACTIMEO;
/* Most clients set timeout to 0, allows server to use its default */
ctx->handle_timeout = 0; /* See MS-SMB2 spec section 2.2.14.2.12 */
@@ -1363,6 +1447,8 @@ smb3_cleanup_fs_context_contents(struct smb3_fs_context *ctx)
ctx->password = NULL;
kfree(ctx->UNC);
ctx->UNC = NULL;
+ kfree(ctx->source);
+ ctx->source = NULL;
kfree(ctx->domainname);
ctx->domainname = NULL;
kfree(ctx->nodename);
@@ -1500,8 +1586,8 @@ void smb3_update_mnt_flags(struct cifs_sb_info *cifs_sb)
cifs_sb->mnt_cifs_flags |= (CIFS_MOUNT_MULTIUSER |
CIFS_MOUNT_NO_PERM);
else
- cifs_sb->mnt_cifs_flags &= ~(CIFS_MOUNT_MULTIUSER |
- CIFS_MOUNT_NO_PERM);
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_MULTIUSER;
+
if (ctx->strict_io)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_STRICT_IO;
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-28 01:57:19 +0000