Add a new method for saving that filesystems can implement. This mirrors the existing load method.
Signed-off-by: Simon Glass sjg@chromium.org --- Changes in v3: None Changes in v2: None
fs/fs.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ include/fs.h | 2 ++ 2 files changed, 76 insertions(+)
diff --git a/fs/fs.c b/fs/fs.c index 6f5063c..eee7e23 100644 --- a/fs/fs.c +++ b/fs/fs.c @@ -47,6 +47,12 @@ static inline int fs_read_unsupported(const char *filename, void *buf, return -1; }
+static inline int fs_write_unsupported(const char *filename, void *buf, + int offset, int len) +{ + return -1; +} + static inline void fs_close_unsupported(void) { } @@ -57,6 +63,7 @@ struct fstype_info { disk_partition_t *fs_partition); int (*ls)(const char *dirname); 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); };
@@ -94,6 +101,7 @@ static struct fstype_info fstypes[] = { .close = fs_close_unsupported, .ls = fs_ls_unsupported, .read = fs_read_unsupported, + .write = fs_write_unsupported, }, };
@@ -125,6 +133,7 @@ int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype) info->close += gd->reloc_off; info->ls += gd->reloc_off; info->read += gd->reloc_off; + info->write += gd->reloc_off; } relocated = 1; } @@ -196,6 +205,30 @@ int fs_read(const char *filename, ulong addr, int offset, int len) return ret; }
+int fs_write(const char *filename, ulong addr, int offset, int len) +{ + struct fstype_info *info = fs_get_info(fs_type); + void *buf; + int ret; + + /* + * We don't actually know how many bytes are being read, since len==0 + * means read the whole file. + */ + buf = map_sysmem(addr, len); + ret = info->write(filename, buf, offset, len); + unmap_sysmem(buf); + + /* If we requested a specific number of bytes, check we got it */ + if (ret >= 0 && len && ret != len) { + printf("** Unable to write file %s **\n", filename); + ret = -1; + } + fs_close(); + + return ret; +} + int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], int fstype, int cmdline_base) { @@ -277,3 +310,44 @@ int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
return 0; } + +int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], + int fstype, int cmdline_base) +{ + unsigned long addr; + const char *filename; + unsigned long bytes; + unsigned long pos; + int len; + unsigned long time; + + if (argc < 6 || argc > 7) + return CMD_RET_USAGE; + + if (fs_set_blk_dev(argv[1], argv[2], fstype)) + return 1; + + filename = argv[3]; + addr = simple_strtoul(argv[4], NULL, cmdline_base); + bytes = simple_strtoul(argv[5], NULL, cmdline_base); + if (argc >= 7) + pos = simple_strtoul(argv[6], NULL, cmdline_base); + else + pos = 0; + + time = get_timer(0); + len = fs_write(filename, addr, pos, bytes); + time = get_timer(time); + if (len <= 0) + return 1; + + printf("%d bytes written in %lu ms", len, time); + if (time > 0) { + puts(" ("); + print_size(len / time * 1000, "/s"); + puts(")"); + } + puts("\n"); + + return 0; +} diff --git a/include/fs.h b/include/fs.h index b6d69e5..c837bae 100644 --- a/include/fs.h +++ b/include/fs.h @@ -62,5 +62,7 @@ int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], int fstype, int cmdline_base); int do_ls(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, int cmdline_base);
#endif /* _FS_H */