diff options
| author | Leah Rowe <leah@libreboot.org> | 2026-03-24 19:13:59 +0000 |
|---|---|---|
| committer | Leah Rowe <leah@libreboot.org> | 2026-03-24 19:19:33 +0000 |
| commit | 3522a235878900d8371db31ee7a18056861a3419 (patch) | |
| tree | f1eff6c09159623dceb0665bc23070a84188e413 /util/libreboot-utils/include | |
| parent | 217ad55beda2201626c29b1429a94115f51f2f68 (diff) | |
util/nvmutil: use renameat for atomic write
not rename(). use renameat()
this re-uses the logic added for mkhtemp.
this will later enable more stringent
integrity checks, though we already verify
the integrity of a file after writing it
back, and renameat is always tied to the
descriptor, so it's fine.
Signed-off-by: Leah Rowe <leah@libreboot.org>
Diffstat (limited to 'util/libreboot-utils/include')
| -rw-r--r-- | util/libreboot-utils/include/common.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/util/libreboot-utils/include/common.h b/util/libreboot-utils/include/common.h index 9429ddeb..b78b0c9c 100644 --- a/util/libreboot-utils/include/common.h +++ b/util/libreboot-utils/include/common.h @@ -287,6 +287,11 @@ struct xfile { unsigned char bufcmp[GBE_BUF_SIZE]; /* compare gbe/tmp/reads */ unsigned char pad[GBE_WORK_SIZE]; /* the file that wouldn't die */ + + /* we later rename in-place, using old fd. renameat() */ + int dirfd; + char *base; + char *tmpbase; }; /* Command table, MAC address, files |