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linux: libshare/nfs: bsearch() over valid keys 

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #13165
This commit is contained in:
наб 2022-02-28 17:44:06 +01:00 committed by Brian Behlendorf
parent 5b14feec06
commit a31fcd4bad
1 changed files with 20 additions and 28 deletions
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48
lib/libshare/os/linux/nfs.c
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@ -294,6 +294,11 @@ add_linux_shareopt(char **plinux_opts, const char *key, const char *value)
return (SA_OK);
}
static int string_cmp(const void *lhs, const void *rhs) {
const char *const *l = lhs, *const *r = rhs;
return (strcmp(*l, *r));
}
/*
* Validates and converts a single Solaris share option to its Linux
* equivalent.
@ -301,6 +306,15 @@ add_linux_shareopt(char **plinux_opts, const char *key, const char *value)
static int
get_linux_shareopts_cb(const char *key, const char *value, void *cookie)
{
/* This list must remain sorted, since we bsearch() it */
static const char *const valid_keys[] = { "all_squash", "anongid",
"anonuid", "async", "auth_nlm", "crossmnt", "fsid", "fsuid", "hide",
"insecure", "insecure_locks", "mountpoint", "mp", "no_acl",
"no_all_squash", "no_auth_nlm", "no_root_squash",
"no_subtree_check", "no_wdelay", "nohide", "refer", "replicas",
"root_squash", "secure", "secure_locks", "subtree_check", "sync",
"wdelay" };
char **plinux_opts = (char **)cookie;
/* host-specific options, these are taken care of elsewhere */
@ -319,26 +333,9 @@ get_linux_shareopts_cb(const char *key, const char *value, void *cookie)
if (strcmp(key, "nosub") == 0)
key = "subtree_check";
if (strcmp(key, "insecure") != 0 && strcmp(key, "secure") != 0 &&
strcmp(key, "async") != 0 && strcmp(key, "sync") != 0 &&
strcmp(key, "no_wdelay") != 0 && strcmp(key, "wdelay") != 0 &&
strcmp(key, "nohide") != 0 && strcmp(key, "hide") != 0 &&
strcmp(key, "crossmnt") != 0 &&
strcmp(key, "no_subtree_check") != 0 &&
strcmp(key, "subtree_check") != 0 &&
strcmp(key, "insecure_locks") != 0 &&
strcmp(key, "secure_locks") != 0 &&
strcmp(key, "no_auth_nlm") != 0 && strcmp(key, "auth_nlm") != 0 &&
strcmp(key, "no_acl") != 0 && strcmp(key, "mountpoint") != 0 &&
strcmp(key, "mp") != 0 && strcmp(key, "fsuid") != 0 &&
strcmp(key, "refer") != 0 && strcmp(key, "replicas") != 0 &&
strcmp(key, "root_squash") != 0 &&
strcmp(key, "no_root_squash") != 0 &&
strcmp(key, "all_squash") != 0 &&
strcmp(key, "no_all_squash") != 0 && strcmp(key, "fsid") != 0 &&
strcmp(key, "anonuid") != 0 && strcmp(key, "anongid") != 0) {
if (bsearch(&key, valid_keys, ARRAY_SIZE(valid_keys),
sizeof (*valid_keys), string_cmp) == NULL)
return (SA_SYNTAX_ERR);
}
(void) add_linux_shareopt(plinux_opts, key, value);
@ -406,10 +403,8 @@ nfs_add_entry(FILE *tmpfile, const char *sharepath,
static int
nfs_enable_share_impl(sa_share_impl_t impl_share, FILE *tmpfile)
{
char *linux_opts;
int error;
error = get_linux_shareopts(impl_share->sa_shareopts, &linux_opts);
char *linux_opts = NULL;
int error = get_linux_shareopts(impl_share->sa_shareopts, &linux_opts);
if (error != SA_OK)
return (error);
@ -457,11 +452,8 @@ nfs_is_shared(sa_share_impl_t impl_share)
static int
nfs_validate_shareopts(const char *shareopts)
{
char *linux_opts;
int error;
error = get_linux_shareopts(shareopts, &linux_opts);
char *linux_opts = NULL;
int error = get_linux_shareopts(shareopts, &linux_opts);
if (error != SA_OK)
return (error);