X-Git-Url: http://git.osdn.net/view?p=android-x86%2Fexternal-exfat.git;a=blobdiff_plain;f=fuse%2Fmain.c;h=34b3ea66f108badcc46fb9fd594c4795cfd6d5e4;hp=ee1e505d227e57e9bbcd91bd79a9c403249c7343;hb=347324fa9d96c9fcd34aba988661da7151d83e9e;hpb=6dbe4efd2ca67183796fb665a0f3ce67b7449553

diff --git a/fuse/main.c b/fuse/main.c
index ee1e505..34b3ea6 100644
--- a/fuse/main.c
+++ b/fuse/main.c
@@ -2,7 +2,7 @@
 	main.c (01.09.09)
 	FUSE-based exFAT implementation. Requires FUSE 2.6 or later.
 
-	Copyright (C) 2010-2012  Andrew Nayenko
+	Copyright (C) 2010-2013  Andrew Nayenko
 
 	This program is free software: you can redistribute it and/or modify
 	it under the terms of the GNU General Public License as published by
@@ -38,7 +38,8 @@
 	#error FUSE 2.6 or later is required
 #endif
 
-const char* default_options = "ro_fallback,allow_other,blkdev,big_writes";
+const char* default_options = "ro_fallback,allow_other,blkdev,big_writes,"
+		"defer_permissions";
 
 struct exfat ef;
 
@@ -79,7 +80,7 @@ static int fuse_exfat_truncate(const char* path, off_t size)
 	if (rc != 0)
 		return rc;
 
-	rc = exfat_truncate(&ef, node, size);
+	rc = exfat_truncate(&ef, node, size, true);
 	exfat_put_node(&ef, node);
 	return rc;
 }
@@ -154,19 +155,25 @@ static int fuse_exfat_release(const char* path, struct fuse_file_info* fi)
 static int fuse_exfat_read(const char* path, char* buffer, size_t size,
 		off_t offset, struct fuse_file_info* fi)
 {
+	ssize_t ret;
+
 	exfat_debug("[%s] %s (%zu bytes)", __func__, path, size);
-	if (exfat_generic_pread(&ef, get_node(fi), buffer, size, offset) != size)
-		return EOF;
-	return size;
+	ret = exfat_generic_pread(&ef, get_node(fi), buffer, size, offset);
+	if (ret < 0)
+		return -EIO;
+	return ret;
 }
 
 static int fuse_exfat_write(const char* path, const char* buffer, size_t size,
 		off_t offset, struct fuse_file_info* fi)
 {
+	ssize_t ret;
+
 	exfat_debug("[%s] %s (%zu bytes)", __func__, path, size);
-	if (exfat_generic_pwrite(&ef, get_node(fi), buffer, size, offset) != size)
-		return EOF;
-	return size;
+	ret = exfat_generic_pwrite(&ef, get_node(fi), buffer, size, offset);
+	if (ret < 0)
+		return -EIO;
+	return ret;
 }
 
 static int fuse_exfat_unlink(const char* path)
@@ -235,14 +242,24 @@ static int fuse_exfat_utimens(const char* path, const struct timespec tv[2])
 	return 0;
 }
 
-#ifdef __APPLE__
 static int fuse_exfat_chmod(const char* path, mode_t mode)
 {
+	const mode_t VALID_MODE_MASK = S_IFREG | S_IFDIR |
+			S_IRWXU | S_IRWXG | S_IRWXO;
+
 	exfat_debug("[%s] %s 0%ho", __func__, path, mode);
-	/* make OS X utilities happy */
+	if (mode & ~VALID_MODE_MASK)
+		return -EPERM;
+	return 0;
+}
+
+static int fuse_exfat_chown(const char* path, uid_t uid, gid_t gid)
+{
+	exfat_debug("[%s] %s %u:%u", __func__, path, uid, gid);
+	if (uid != ef.uid || gid != ef.gid)
+		return -EPERM;
 	return 0;
 }
-#endif
 
 static int fuse_exfat_statfs(const char* path, struct statvfs* sfs)
 {
@@ -285,7 +302,7 @@ static void fuse_exfat_destroy(void* unused)
 
 static void usage(const char* prog)
 {
-	fprintf(stderr, "Usage: %s [-d] [-o options] [-v] <device> <dir>\n", prog);
+	fprintf(stderr, "Usage: %s [-d] [-o options] [-V] <device> <dir>\n", prog);
 	exit(1);
 }
 
@@ -304,9 +321,8 @@ static struct fuse_operations fuse_exfat_ops =
 	.mkdir		= fuse_exfat_mkdir,
 	.rename		= fuse_exfat_rename,
 	.utimens	= fuse_exfat_utimens,
-#ifdef __APPLE__
-	.chmod          = fuse_exfat_chmod,
-#endif
+	.chmod		= fuse_exfat_chmod,
+	.chown		= fuse_exfat_chown,
 	.statfs		= fuse_exfat_statfs,
 	.init		= fuse_exfat_init,
 	.destroy	= fuse_exfat_destroy,
@@ -337,19 +353,6 @@ static char* add_option(char* options, const char* name, const char* value)
 	return options;
 }
 
-static char* add_fsname_option(char* options, const char* spec)
-{
-	char spec_abs[PATH_MAX];
-
-	if (realpath(spec, spec_abs) == NULL)
-	{
-		free(options);
-		exfat_error("failed to get absolute path for `%s'", spec);
-		return NULL;
-	}
-	return add_option(options, "fsname", spec_abs);
-}
-
 static char* add_user_option(char* options)
 {
 	struct passwd* pw;
@@ -381,7 +384,7 @@ static char* add_blksize_option(char* options, long cluster_size)
 
 static char* add_fuse_options(char* options, const char* spec)
 {
-	options = add_fsname_option(options, spec);
+	options = add_option(options, "fsname", spec);
 	if (options == NULL)
 		return NULL;
 	options = add_user_option(options);
@@ -404,7 +407,7 @@ int main(int argc, char* argv[])
 	int debug = 0;
 	struct fuse_chan* fc = NULL;
 	struct fuse* fh = NULL;
-	char** pp;
+	int opt;
 
 	printf("FUSE exfat %u.%u.%u\n",
 			EXFAT_VERSION_MAJOR, EXFAT_VERSION_MINOR, EXFAT_VERSION_PATCH);
@@ -416,40 +419,39 @@ int main(int argc, char* argv[])
 		return 1;
 	}
 
-	for (pp = argv + 1; *pp; pp++)
+	while ((opt = getopt(argc, argv, "dno:Vv")) != -1)
 	{
-		if (strcmp(*pp, "-o") == 0)
+		switch (opt)
 		{
-			pp++;
-			if (*pp == NULL)
-				usage(argv[0]);
-			mount_options = add_option(mount_options, *pp, NULL);
+		case 'd':
+			debug = 1;
+			break;
+		case 'n':
+			break;
+		case 'o':
+			mount_options = add_option(mount_options, optarg, NULL);
 			if (mount_options == NULL)
 				return 1;
-		}
-		else if (strcmp(*pp, "-d") == 0)
-			debug = 1;
-		else if (strcmp(*pp, "-v") == 0)
-		{
+			break;
+		case 'V':
 			free(mount_options);
-			puts("Copyright (C) 2010-2012  Andrew Nayenko");
+			puts("Copyright (C) 2010-2013  Andrew Nayenko");
 			return 0;
-		}
-		else if (spec == NULL)
-			spec = *pp;
-		else if (mount_point == NULL)
-			mount_point = *pp;
-		else
-		{
+		case 'v':
+			break;
+		default:
 			free(mount_options);
 			usage(argv[0]);
+			break;
 		}
 	}
-	if (spec == NULL || mount_point == NULL)
+	if (argc - optind != 2)
 	{
 		free(mount_options);
 		usage(argv[0]);
 	}
+	spec = argv[optind];
+	mount_point = argv[optind + 1];
 
 	if (exfat_mount(&ef, spec, mount_options) != 0)
 	{