[patch] Resolves the problem of white spaces in mount points

eject.patch (text/plain), 1.63 KB, created by Jan on 2007-02-14 13:13:42 UTC

--- eject.c	15 Jul 2006 23:28:28 -0000	1.10
+++ eject.c	2007-02-14 13:57:52.000000000 +0100
@@ -379,6 +379,30 @@ static int FileExists(const char *name, 
 
 
 /*
+ * Linux mangles spaces in mount points by changing them to an octal string
+ * of '\040'.  So lets scan the mount point and fix it up by replacing all
+ * occurrences off '\0##' with the ASCII value of 0##.  Requires a writable
+ * string as input as we mangle in place.  Some of this was taken from the
+ * util-linux package.
+ */
+#define octalify(a) ((a) & 7)
+#define tooctal(s) (64*octalify(s[1]) + 8*octalify(s[2]) + octalify(s[3]))
+#define isoctal(a) (((a) & ~7) == '0')
+static char *DeMangleMount(char *s)
+{
+	char *tmp = s;
+	while ((tmp = strchr(tmp, '\\')) != NULL) {
+		if (tmp[1] == '0' && isoctal(tmp[2]) && isoctal(tmp[3])) {
+			tmp[0] = tooctal(tmp);
+			memmove(tmp+1, tmp+4, strlen(tmp)-3);
+		}
+		++tmp;
+	}
+	return s;
+}
+
+
+/*
  * Given name, such as foo, see if any of the following exist:
  *
  * foo (if foo starts with '.' or '/')
@@ -890,6 +914,8 @@ static int MountedDevice(const char *nam
 		if (rc >= 2) {
 			int mtabmaj, mtabmin;
 			GetMajorMinor(s1, &mtabmaj, &mtabmin);
+			DeMangleMount(s1);
+			DeMangleMount(s2);
 			if (((strcmp(s1, name) == 0) || (strcmp(s2, name) == 0)) ||
 				((maj != -1) && (maj == mtabmaj) && (min == mtabmin))) {
 				FCLOSE(fp);
@@ -935,6 +961,8 @@ static int MountableDevice(const char *n
 
 	while (fgets(line, sizeof(line), fp) != 0) {
 		rc = sscanf(line, "%1023s %1023s", s1, s2);
+		DeMangleMount(s1);
+		DeMangleMount(s2);
 		if (rc >= 2 && s1[0] != '#' && strcmp(s2, name) == 0) {
 			FCLOSE(fp);
 			*deviceName = strdup(s1);