diff options
Diffstat (limited to 'src/lib')
-rw-r--r-- | src/lib/fmap.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/lib/fmap.c b/src/lib/fmap.c index 9602134d94..2b4e3bae2c 100644 --- a/src/lib/fmap.c +++ b/src/lib/fmap.c @@ -173,3 +173,25 @@ int fmap_find_region_name(const struct region * const ar, return -1; } + +ssize_t fmap_read_area(const char *name, void *buffer, size_t size) +{ + struct region_device rdev; + if (fmap_locate_area_as_rdev(name, &rdev)) + return -1; + return rdev_readat(&rdev, buffer, 0, + MIN(size, region_device_sz(&rdev))); +} + +ssize_t fmap_overwrite_area(const char *name, const void *buffer, size_t size) +{ + struct region_device rdev; + + if (fmap_locate_area_as_rdev_rw(name, &rdev)) + return -1; + if (size > region_device_sz(&rdev)) + return -1; + if (rdev_eraseat(&rdev, 0, region_device_sz(&rdev)) < 0) + return -1; + return rdev_writeat(&rdev, buffer, 0, size); +} |