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authorLeah Rowe <leah@libreboot.org>2023-01-17 10:23:21 +0000
committerLeah Rowe <leah@libreboot.org>2023-01-17 10:23:21 +0000
commit8dea350a625c8d8d9fc0835664b50c1e90ca6fd8 (patch)
tree5f42267253f25c7aa16f3c12d1ff9d3552f17cd6 /util
parentd0fa08d58d8bc4761c77200f159d571c3fd1231c (diff)
util/nvmutil: only write parts that are modified
Old behaviour: always write both gbe sections. New behaviour: only write back what was changed.
Diffstat (limited to 'util')
-rw-r--r--util/nvmutil/nvmutil.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
index 33f23899..4acef2fa 100644
--- a/util/nvmutil/nvmutil.c
+++ b/util/nvmutil/nvmutil.c
@@ -439,21 +439,22 @@ writeGbeFile(int *fd, const char *filename)
int partnum;
errno = 0;
- if (pwrite((*fd), (uint8_t *) gbe[0], SIZE_4KB, 0) != SIZE_4KB)
- err(errno, "%s", filename);
- if (pwrite((*fd), (uint8_t *) gbe[1], SIZE_4KB, SIZE_4KB) != SIZE_4KB)
- err(errno, "%s", filename);
- if (close((*fd)))
- err(errno, "%s", filename);
- if (errno != 0)
- err(errno, "%s", filename);
-
for (partnum = 0; partnum < 2; partnum++) {
- if (nvmPartModified[partnum])
+ if (nvmPartModified[partnum]) {
printf("Part %d modified\n", partnum);
- else
+ } else {
fprintf (stderr,
"Part %d NOT modified\n", partnum);
+ continue;
+ }
+ if (pwrite((*fd), (uint8_t *) gbe[partnum], SIZE_4KB,
+ partnum << 12) != SIZE_4KB)
+ err(errno, "%s", filename);
}
- printf("File `%s` successfully modified\n", filename);
+ if (close((*fd)))
+ err(errno, "%s", filename);
+ if (errno != 0)
+ err(errno, "%s", filename);
+
+ printf("File `%s` successfully re-written.\n", filename);
}