part: Add accessors for struct disk_partition uuid

[thirdparty/u-boot.git] / fs / fs.c

diff --git a/fs/fs.c b/fs/fs.c
index 8324b4a22f20661a71de9a34451076659353e170..2b815b1db0fed61086a27528aa5bc9a28efa05c8 100644 (file)
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -13,6 +13,7 @@
 #include <env.h>
 #include <lmb.h>
 #include <log.h>
+#include <malloc.h>
 #include <mapmem.h>
 #include <part.h>
 #include <ext4fs.h>
@@ -26,6 +27,7 @@
 #include <asm/io.h>
 #include <div64.h>
 #include <linux/math64.h>
+#include <linux/sizes.h>
 #include <efi_loader.h>
 #include <squashfs.h>
 #include <erofs.h>
@@ -1008,3 +1010,59 @@ int do_fs_types(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
        puts("\n");
        return CMD_RET_SUCCESS;
 }
+
+int fs_read_alloc(const char *fname, ulong size, uint align, void **bufp)
+{
+       loff_t bytes_read;
+       ulong addr;
+       char *buf;
+       int ret;
+
+       buf = memalign(align, size + 1);
+       if (!buf)
+               return log_msg_ret("buf", -ENOMEM);
+       addr = map_to_sysmem(buf);
+
+       ret = fs_read(fname, addr, 0, size, &bytes_read);
+       if (ret) {
+               free(buf);
+               return log_msg_ret("read", ret);
+       }
+       if (size != bytes_read)
+               return log_msg_ret("bread", -EIO);
+       buf[size] = '\0';
+
+       *bufp = buf;
+
+       return 0;
+}
+
+int fs_load_alloc(const char *ifname, const char *dev_part_str,
+                 const char *fname, ulong max_size, ulong align, void **bufp,
+                 ulong *sizep)
+{
+       loff_t size;
+       void *buf;
+       int ret;
+
+       if (fs_set_blk_dev(ifname, dev_part_str, FS_TYPE_ANY))
+               return log_msg_ret("set", -ENOMEDIUM);
+
+       ret = fs_size(fname, &size);
+       if (ret)
+               return log_msg_ret("sz", -ENOENT);
+
+       if (size >= (max_size ?: SZ_1G))
+               return log_msg_ret("sz", -E2BIG);
+
+       if (fs_set_blk_dev(ifname, dev_part_str, FS_TYPE_ANY))
+               return log_msg_ret("set", -ENOMEDIUM);
+
+       ret = fs_read_alloc(fname, size, align, &buf);
+       if (ret)
+               return log_msg_ret("al", ret);
+       *sizep = size;
+       *bufp = buf;
+
+       return 0;
+}