contrib/fuse: update from upstream [555d6b50 in git://fuse.git.sourceforge.net/fuse/fuse]

"""
commit 555d6b504308eac6b976321ce938ee4bec62c354
Author: Miklos Szeredi <mszeredi@suse.cz>
Date:   Tue Sep 28 10:13:24 2010 +0200

    Fix option escaping for fusermount.

    If the "fsname=" option contained a comma then the option parser in
    fusermount was confused (Novell bugzilla #641480).  Fix by escaping
    commas when passing them over to fusermount.

    Reported by Jan Engelhardt
"""

Signed-off-by: Csaba Henk <csaba@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>

BUG: 1752 (sync with upstream for "Fix option escaping for fusermount.")
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1752

2 files changed, 55 insertions, 5 deletions

diff --git a/contrib/fuse-lib/mount.c b/contrib/fuse-lib/mount.c
index e88293b38..376d06686 100644
--- a/contrib/fuse-lib/mount.c
+++ b/contrib/fuse-lib/mount.c
@@ -589,11 +589,41 @@ fuse_mount_sys (const char *mountpoint, char *fsname, char *mnt_param)
         return fd;
 }
 
+static char *
+escape (char *s)
+{
+        size_t len = 0;
+        char *p = NULL;
+        char *q = NULL;
+        char *e = NULL;
+
+        for (p = s; *p; p++) {
+                if (*p == ',')
+                       len++;
+                len++;
+        }
+
+        e = CALLOC (1, len + 1);
+        if (!e)
+                return NULL;
+
+        for (p = s, q = e; *p; p++, q++) {
+                if (*p == ',') {
+                        *q = '\\';
+                        q++;
+                }
+                *q = *p;
+        }
+
+        return e;
+}
+
 int
 gf_fuse_mount (const char *mountpoint, char *fsname, char *mnt_param)
 {
         int fd = -1, rv = -1;
         char *fm_mnt_params = NULL, *p = NULL;
+        char *efsname = NULL;
 
         fd = fuse_mount_sys (mountpoint, fsname, mnt_param);
         if (fd == -1) {
@@ -602,10 +632,16 @@ gf_fuse_mount (const char *mountpoint, char *fsname, char *mnt_param)
                         "retry to mount via fusermount",
                         strerror (errno));
 
+                efsname = escape (fsname);
+                if (!efsname) {
+                        GFFUSE_LOGERR ("Out of memory");
+
+                        return -1;
+                }
                 rv = asprintf (&fm_mnt_params,
                                "%s,fsname=%s,nonempty,subtype=glusterfs",
-                               mnt_param, fsname);
-
+                               mnt_param, efsname);
+                FREE (efsname);
                 if (rv == -1) {
                         GFFUSE_LOGERR ("Out of memory");
 
diff --git a/contrib/fuse-util/fusermount.c b/contrib/fuse-util/fusermount.c
index ae779d3fb..39da9b6a0 100644
--- a/contrib/fuse-util/fusermount.c
+++ b/contrib/fuse-util/fusermount.c
@@ -649,7 +649,9 @@ static int opt_eq(const char *s, unsigned len, const char *opt)
 static int get_string_opt(const char *s, unsigned len, const char *opt,
 			  char **val)
 {
+	int i;
 	unsigned opt_len = strlen(opt);
+	char *d;
 
 	if (*val)
 		free(*val);
@@ -659,8 +661,15 @@ static int get_string_opt(const char *s, unsigned len, const char *opt,
 		return 0;
 	}
 
-	memcpy(*val, s + opt_len, len - opt_len);
-	(*val)[len - opt_len] = '\0';
+	d = *val;
+	s += opt_len;
+	len -= opt_len;
+	for (i = 0; i < len; i++) {
+		if (s[i] == '\\' && i + 1 < len)
+			i++;
+		*d++ = s[i];
+	}
+	*d = '\0';
 	return 1;
 }
 
@@ -691,7 +700,12 @@ static int do_mount(const char *mnt, char **typep, mode_t rootmode,
 		unsigned len;
 		const char *fsname_str = "fsname=";
 		const char *subtype_str = "subtype=";
-		for (len = 0; s[len] && s[len] != ','; len++);
+		for (len = 0; s[len]; len++) {
+			if (s[len] == '\\' && s[len + 1])
+				len++;
+			else if (s[len] == ',')
+				break;
+		}
 		if (begins_with(s, fsname_str)) {
 			if (!get_string_opt(s, len, fsname_str, &fsname))
 				goto err;