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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-10 10:48:32 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-10 10:48:32 +0900
commitfc81c038c2d61d4fcd8150f383fec1ce23087597 (patch)
treebc0b5156a97bb4ba6d4ab96906faaf4255b45ba5 /fs/cifs
parent547b1e81afe3119f7daf702cc03b158495535a25 (diff)
parent72bd481f860f0125c810bb43d878ce5f9c060c58 (diff)
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Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6
Pull CIFS fixes from Steve French. * 'for-linus' of git://git.samba.org/sfrench/cifs-2.6: cifs: reinstate the forcegid option Convert properly UTF-8 to UTF-16 [CIFS] WARN_ON_ONCE if kernel_sendmsg() returns -ENOSPC
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/cifs_unicode.c22
-rw-r--r--fs/cifs/connect.c9
-rw-r--r--fs/cifs/transport.c6
3 files changed, 37 insertions, 0 deletions
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index 53cf2aabce87..71d5d0a5f6b2 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -203,6 +203,27 @@ cifs_strtoUTF16(__le16 *to, const char *from, int len,
int i;
wchar_t wchar_to; /* needed to quiet sparse */
+ /* special case for utf8 to handle no plane0 chars */
+ if (!strcmp(codepage->charset, "utf8")) {
+ /*
+ * convert utf8 -> utf16, we assume we have enough space
+ * as caller should have assumed conversion does not overflow
+ * in destination len is length in wchar_t units (16bits)
+ */
+ i = utf8s_to_utf16s(from, len, UTF16_LITTLE_ENDIAN,
+ (wchar_t *) to, len);
+
+ /* if success terminate and exit */
+ if (i >= 0)
+ goto success;
+ /*
+ * if fails fall back to UCS encoding as this
+ * function should not return negative values
+ * currently can fail only if source contains
+ * invalid encoded characters
+ */
+ }
+
for (i = 0; len && *from; i++, from += charlen, len -= charlen) {
charlen = codepage->char2uni(from, len, &wchar_to);
if (charlen < 1) {
@@ -215,6 +236,7 @@ cifs_strtoUTF16(__le16 *to, const char *from, int len,
put_unaligned_le16(wchar_to, &to[i]);
}
+success:
put_unaligned_le16(0, &to[i]);
return i;
}
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 2fdbe08a7a23..5c670b998ffb 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -67,6 +67,7 @@ enum {
/* Mount options that take no arguments */
Opt_user_xattr, Opt_nouser_xattr,
Opt_forceuid, Opt_noforceuid,
+ Opt_forcegid, Opt_noforcegid,
Opt_noblocksend, Opt_noautotune,
Opt_hard, Opt_soft, Opt_perm, Opt_noperm,
Opt_mapchars, Opt_nomapchars, Opt_sfu,
@@ -117,6 +118,8 @@ static const match_table_t cifs_mount_option_tokens = {
{ Opt_nouser_xattr, "nouser_xattr" },
{ Opt_forceuid, "forceuid" },
{ Opt_noforceuid, "noforceuid" },
+ { Opt_forcegid, "forcegid" },
+ { Opt_noforcegid, "noforcegid" },
{ Opt_noblocksend, "noblocksend" },
{ Opt_noautotune, "noautotune" },
{ Opt_hard, "hard" },
@@ -1195,6 +1198,12 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
case Opt_noforceuid:
override_uid = 0;
break;
+ case Opt_forcegid:
+ override_gid = 1;
+ break;
+ case Opt_noforcegid:
+ override_gid = 0;
+ break;
case Opt_noblocksend:
vol->noblocksnd = 1;
break;
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 2126ab185045..76d974c952fe 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -183,6 +183,12 @@ smb_send_kvec(struct TCP_Server_Info *server, struct kvec *iov, size_t n_vec,
rc = kernel_sendmsg(ssocket, &smb_msg, &iov[first_vec],
n_vec - first_vec, remaining);
if (rc == -ENOSPC || rc == -EAGAIN) {
+ /*
+ * Catch if a low level driver returns -ENOSPC. This
+ * WARN_ON will be removed by 3.10 if no one reports
+ * seeing this.
+ */
+ WARN_ON_ONCE(rc == -ENOSPC);
i++;
if (i >= 14 || (!server->noblocksnd && (i > 2))) {
cERROR(1, "sends on sock %p stuck for 15 "