diff options
| author | Kees Cook | 2020-10-02 10:38:25 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2020-10-05 13:37:04 +0200 |
| commit | 0fa8e084648779eeb8929ae004301b3acf3bad84 (patch) | |
| tree | ebfed647c8f2a43a0967ba127c7e75df36909cba /drivers/base | |
| parent | 34736daeecd1608bee21e3bf5170cd4c95143109 (diff) | |
fs/kernel_file_read: Add "offset" arg for partial reads
To perform partial reads, callers of kernel_read_file*() must have a
non-NULL file_size argument and a preallocated buffer. The new "offset"
argument can then be used to seek to specific locations in the file to
fill the buffer to, at most, "buf_size" per call.
Where possible, the LSM hooks can report whether a full file has been
read or not so that the contents can be reasoned about.
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20201002173828.2099543-14-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/firmware_loader/main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c index d9a180148c4b..79f86466d472 100644 --- a/drivers/base/firmware_loader/main.c +++ b/drivers/base/firmware_loader/main.c @@ -499,7 +499,7 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv, fw_priv->size = 0; /* load firmware files from the mount namespace of init */ - rc = kernel_read_file_from_path_initns(path, &buffer, msize, + rc = kernel_read_file_from_path_initns(path, 0, &buffer, msize, NULL, READING_FIRMWARE); if (rc < 0) { |