sdcard: Add command line options for lowercase file name squashing:
-l squash all file names to lower case when creating new files
-f rename existing files to make them lower case
Change-Id: I3245deb690228cf577bdc9bd4b0fcf0306ea3e16
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/sdcard/sdcard.c b/sdcard/sdcard.c
index 4f5a6b0..0b54db9 100644
--- a/sdcard/sdcard.c
+++ b/sdcard/sdcard.c
@@ -108,6 +108,9 @@
char rootpath[1024];
};
+/* true if file names should be squashed to lower case */
+static int force_lower_case = 0;
+
#define PATH_BUFFER_SIZE 1024
/*
@@ -442,11 +445,79 @@
fuse_reply(fuse, unique, &out, sizeof(out));
}
+static int name_needs_normalizing(const char* name) {
+ char ch;
+ while ((ch = *name++) != 0) {
+ if (ch != tolower(ch))
+ return 1;
+ }
+ return 0;
+}
+
static void normalize_name(char *name)
{
- char ch;
- while ((ch = *name) != 0)
- *name++ = tolower(ch);
+ if (force_lower_case) {
+ char ch;
+ while ((ch = *name) != 0)
+ *name++ = tolower(ch);
+ }
+}
+
+static void fix_files_lower_case(const char* path) {
+ DIR* dir;
+ struct dirent* entry;
+ char pathbuf[PATH_MAX];
+ char oldpath[PATH_MAX];
+ int pathLength = strlen(path);
+ int pathRemaining;
+ char* fileSpot;
+
+ if (pathLength >= sizeof(pathbuf) - 1) {
+ ERROR("path too long: %s\n", path);
+ return;
+ }
+ strcpy(pathbuf, path);
+ if (pathbuf[pathLength - 1] != '/') {
+ pathbuf[pathLength++] = '/';
+ }
+ fileSpot = pathbuf + pathLength;
+ pathRemaining = sizeof(pathbuf) - pathLength - 1;
+
+ dir = opendir(path);
+ if (!dir) {
+ ERROR("opendir %s failed: %s", path, strerror(errno));
+ return;
+ }
+
+ while ((entry = readdir(dir))) {
+ const char* name = entry->d_name;
+ int nameLength;
+
+ // ignore "." and ".."
+ if (name[0] == '.' && (name[1] == 0 || (name[1] == '.' && name[2] == 0))) {
+ continue;
+ }
+
+ nameLength = strlen(name);
+ if (nameLength > pathRemaining) {
+ ERROR("path %s/%s too long\n", path, name);
+ continue;
+ }
+ strcpy(fileSpot, name);
+
+ if (name_needs_normalizing(name)) {
+ /* rename file to lower case file name */
+ strlcpy(oldpath, pathbuf, sizeof(oldpath));
+ normalize_name(pathbuf);
+ rename(oldpath, pathbuf);
+ }
+
+ if (entry->d_type == DT_DIR) {
+ /* recurse to subdirectories */
+ fix_files_lower_case(pathbuf);
+ }
+ }
+ closedir(dir);
}
void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *data, unsigned len)
@@ -843,30 +914,59 @@
}
}
+static int usage()
+{
+ ERROR("usage: sdcard [-l -f] <path> <uid> <gid>\n\n\t-l force file names to lower case when creating new files\n\t-f fix up any existing file names at are not lower case\n");
+ return -1;
+}
+
int main(int argc, char **argv)
{
struct fuse fuse;
char opts[256];
int fd;
int res;
- unsigned uid;
- unsigned gid;
- const char *path;
+ unsigned uid = -1;
+ unsigned gid = -1;
+ const char *path = NULL;
+ int check_files = 0;
+ int i;
- if (argc != 4) {
- ERROR("usage: sdcard <path> <uid> <gid>\n");
- return -1;
+ for (i = 1; i < argc; i++) {
+ char* arg = argv[i];
+ if (arg[0] == '-') {
+ if (!strcmp(arg, "-l")) {
+ force_lower_case = 1;
+ ERROR("force_lower_case\n");
+ } else if (!strcmp(arg, "-f")) {
+ check_files = 1;
+ ERROR("check_files\n");
+ } else {
+ return usage();
+ }
+ } else {
+ if (!path)
+ path = arg;
+ else if (uid == -1)
+ uid = strtoul(arg, 0, 10);
+ else if (gid == -1)
+ gid = strtoul(arg, 0, 10);
+ else {
+ ERROR("too many arguments\n");
+ return usage();
+ }
+ }
}
- uid = strtoul(argv[2], 0, 10);
- gid = strtoul(argv[3], 0, 10);
- if (!uid || !gid) {
+ if (!path) {
+ ERROR("no path specified\n");
+ return usage();
+ }
+ if (uid <= 0 || gid <= 0) {
ERROR("uid and gid must be nonzero\n");
- return -1;
+ return usage();
}
- path = argv[1];
-
/* cleanup from previous instance, if necessary */
umount2(MOUNT_POINT, 2);
@@ -894,6 +994,9 @@
return -1;
}
+ if (check_files)
+ fix_files_lower_case(path);
+
fuse_init(&fuse, fd, path);
umask(0);