diff options
Diffstat (limited to '0007-fs-implement-infra-structure-for-an-exists-function.patch')
-rw-r--r-- | 0007-fs-implement-infra-structure-for-an-exists-function.patch | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/0007-fs-implement-infra-structure-for-an-exists-function.patch b/0007-fs-implement-infra-structure-for-an-exists-function.patch deleted file mode 100644 index 3c01a66..0000000 --- a/0007-fs-implement-infra-structure-for-an-exists-function.patch +++ /dev/null @@ -1,182 +0,0 @@ -From 507d9019944b07ec9d54a7ebb3e6553aaf987de6 Mon Sep 17 00:00:00 2001 -From: Stephen Warren <swarren@nvidia.com> -Date: Thu, 23 Jan 2014 12:56:57 -0700 -Subject: [PATCH 07/13] fs: implement infra-structure for an 'exists' function - -This could be used in scripts such as: - -if exists mmc 0:1 /boot/boot.scr; then - load mmc 0:1 ${scriptaddr} /boot/boot.scr - source ${scriptaddr} -fi - -rather than: - -if load mmc 0:1 ${scriptaddr} /boot/boot.scr; then - source ${scriptaddr} -fi - -This prevents errors being printed by attempts to load non-existent -files, which can be important when checking for a large set of files, -such as /boot/boot.scr.uimg, /boot/boot.scr, /boot/extlinux.conf, -/boot.scr.uimg, /boot.scr, /extlinux.conf. - -Signed-off-by: Stephen Warren <swarren@nvidia.com> -Acked-by: Simon Glass <sjg@chromium.org> ---- - common/cmd_fs.c | 14 ++++++++++++++ - fs/fs.c | 38 ++++++++++++++++++++++++++++++++++++++ - include/fs.h | 10 ++++++++++ - 3 files changed, 62 insertions(+) - -diff --git a/common/cmd_fs.c b/common/cmd_fs.c -index 91a205a..44b00cd 100644 ---- a/common/cmd_fs.c -+++ b/common/cmd_fs.c -@@ -49,3 +49,17 @@ U_BOOT_CMD( - " - List files in directory 'directory' of partition 'part' on\n" - " device type 'interface' instance 'dev'." - ); -+ -+int do_exists_wrapper(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -+{ -+ return do_exists(cmdtp, flag, argc, argv, FS_TYPE_ANY); -+} -+ -+U_BOOT_CMD( -+ exists, 4, 0, do_exists_wrapper, -+ "determine whether a file exists", -+ "<interface> <dev[:part]> filename\n" -+ " - Determine whether 'filename' exists in partition 'part' on\n" -+ " device type 'interface' instance 'dev', and set the command.\n" -+ " exit status so that 'if exists ...; then' works.\n" -+); -diff --git a/fs/fs.c b/fs/fs.c -index 9c2ef6b..f3d9a1c 100644 ---- a/fs/fs.c -+++ b/fs/fs.c -@@ -41,6 +41,11 @@ static inline int fs_ls_unsupported(const char *dirname) - return -1; - } - -+static inline int fs_exists_unsupported(const char *filename) -+{ -+ return -1; -+} -+ - static inline int fs_read_unsupported(const char *filename, void *buf, - int offset, int len) - { -@@ -62,6 +67,7 @@ struct fstype_info { - int (*probe)(block_dev_desc_t *fs_dev_desc, - disk_partition_t *fs_partition); - int (*ls)(const char *dirname); -+ int (*exists)(const char *filename); - int (*read)(const char *filename, void *buf, int offset, int len); - int (*write)(const char *filename, void *buf, int offset, int len); - void (*close)(void); -@@ -74,6 +80,7 @@ static struct fstype_info fstypes[] = { - .probe = fat_set_blk_dev, - .close = fat_close, - .ls = file_fat_ls, -+ .exists = fs_exists_unsupported, - .read = fat_read_file, - .write = fs_write_unsupported, - }, -@@ -84,6 +91,7 @@ static struct fstype_info fstypes[] = { - .probe = ext4fs_probe, - .close = ext4fs_close, - .ls = ext4fs_ls, -+ .exists = fs_exists_unsupported, - .read = ext4_read_file, - .write = fs_write_unsupported, - }, -@@ -94,6 +102,7 @@ static struct fstype_info fstypes[] = { - .probe = sandbox_fs_set_blk_dev, - .close = sandbox_fs_close, - .ls = sandbox_fs_ls, -+ .exists = fs_exists_unsupported, - .read = fs_read_sandbox, - .write = fs_write_sandbox, - }, -@@ -103,6 +112,7 @@ static struct fstype_info fstypes[] = { - .probe = fs_probe_unsupported, - .close = fs_close_unsupported, - .ls = fs_ls_unsupported, -+ .exists = fs_exists_unsupported, - .read = fs_read_unsupported, - .write = fs_write_unsupported, - }, -@@ -184,6 +194,19 @@ int fs_ls(const char *dirname) - return ret; - } - -+int fs_exists(const char *filename) -+{ -+ int ret; -+ -+ struct fstype_info *info = fs_get_info(fs_type); -+ -+ ret = info->exists(filename); -+ -+ fs_close(); -+ -+ return ret; -+} -+ - int fs_read(const char *filename, ulong addr, int offset, int len) - { - struct fstype_info *info = fs_get_info(fs_type); -@@ -309,6 +332,21 @@ int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], - return 0; - } - -+int do_exists(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], -+ int fstype) -+{ -+ if (argc != 4) -+ return CMD_RET_USAGE; -+ -+ if (fs_set_blk_dev(argv[1], argv[2], fstype)) -+ return 1; -+ -+ if (fs_exists(argv[3])) -+ return 1; -+ -+ return 0; -+} -+ - int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], - int fstype) - { -diff --git a/include/fs.h b/include/fs.h -index 97b0094..b8b7706 100644 ---- a/include/fs.h -+++ b/include/fs.h -@@ -44,6 +44,14 @@ int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype); - int fs_ls(const char *dirname); - - /* -+ * Determine whether a file exists -+ * -+ * Returns 0 if the file exists, non-zero if it doesn't exist. -+ * This encoding was picked to help shell command implementation. -+ */ -+int fs_exists(const char *filename); -+ -+/* - * Read file "filename" from the partition previously set by fs_set_blk_dev(), - * to address "addr", starting at byte offset "offset", and reading "len" - * bytes. "offset" may be 0 to read from the start of the file. "len" may be -@@ -72,6 +80,8 @@ int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], - int fstype); - int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], - int fstype); -+int do_exists(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], -+ int fstype); - int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], - int fstype); - --- -1.8.5.3 - |