From: Miklos Szeredi <miklos@szeredi.hu>
Date: Mon, 15 Nov 2004 10:05:12 +0000 (+0000)
Subject: fix
X-Git-Tag: fuse_2_0_merge3~3
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d4d6b364df4290c46111bd033c6031d7e4d5ef74;p=qemu-gpiodev%2Flibfuse.git

fix
---

diff --git a/ChangeLog b/ChangeLog
index 9e6a0e6..7084029 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2004-11-15  Miklos Szeredi <miklos@szeredi.hu>
+
+	* fusermount: do not resolve last component of mountpoint on if it
+	is '.' or '..'.  This new path resolvation is now done on mount as
+	well as unmount.  This enables relative paths to work on unmount.
+
 2004-11-14  Miklos Szeredi <miklos@szeredi.hu>
 
 	* Released 2.1-pre1
diff --git a/util/fusermount.c b/util/fusermount.c
index e9e195d..c8bfa5b 100644
--- a/util/fusermount.c
+++ b/util/fusermount.c
@@ -530,37 +530,57 @@ static int mount_fuse(const char *mnt, const char *opts)
     return fd;
 }
 
-static char *resolve_path(const char *orig, int unmount)
+static char *resolve_path(const char *orig)
 {
     char buf[PATH_MAX];
+    char *copy;
     char *dst;
-    
-    if (unmount) {
-        char *end;
-        /* Resolving at unmount can only be done very carefully, not touching
-           the mountpoint... So for the moment it's not done. 
-
-           Just remove trailing slashes instead.
-        */
-        dst = strdup(orig);
-        if (dst == NULL) {
-            fprintf(stderr, "%s: failed to allocate memory\n", progname);
-            return NULL;
-        }
+    char *end;
+    char *lastcomp;
+    const char *toresolv;
 
-        for (end = dst + strlen(dst) - 1; end > dst && *end == '/'; end --)
-            *end = '\0';
-
-        return dst;
+    copy = strdup(orig);
+    if (copy == NULL) {
+        fprintf(stderr, "%s: failed to allocate memory\n", progname);
+        return NULL;
     }
 
-    if (realpath(orig, buf) == NULL) {
+    toresolv = copy;
+    lastcomp = NULL;
+    for (end = copy + strlen(copy) - 1; end > copy && *end == '/'; end --);
+    if (end[0] != '/') {
+        char *tmp;
+        end[1] = '\0';
+        tmp = strrchr(copy, '/');
+        if (tmp == NULL) {
+            lastcomp = copy;
+            toresolv = ".";
+        } else {
+            lastcomp = tmp + 1;
+            if (tmp == copy)
+                toresolv = "/";
+        }
+        if (strcmp(lastcomp, ".") == 0 || strcmp(lastcomp, "..") == 0) {
+            lastcomp = NULL;
+            toresolv = copy;
+        }
+        else if (tmp)
+            tmp[0] = '\0';
+    }
+    if (realpath(toresolv, buf) == NULL) {
         fprintf(stderr, "%s: Bad mount point %s: %s\n", progname, orig,
                 strerror(errno));
+        free(copy);
         return NULL;
     }
-    
-    dst = strdup(buf);
+    if (lastcomp == NULL)
+        dst = strdup(buf);
+    else {
+        dst = (char *) malloc(strlen(buf) + 1 + strlen(lastcomp) + 1);
+        if (dst)
+            sprintf(dst, "%s/%s", buf, lastcomp);
+    }
+    free(copy);
     if (dst == NULL)
         fprintf(stderr, "%s: failed to allocate memory\n", progname);
     return dst;
@@ -682,7 +702,7 @@ int main(int argc, char *argv[])
             exit(1);
     }
 
-    mnt = resolve_path(origmnt, unmount);
+    mnt = resolve_path(origmnt);
     if (mnt == NULL)
         exit(1);