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util/nvmutil: stricter errno on prw()

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we want the first error to be the one shown,
when returning negative

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-10 11:24:11 +00:00
parent 5603fa51d2
commit bbe6de44e8
1 changed files with 0 additions and 5 deletions
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5
util/nvmutil/nvmutil.c
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@@ -1384,7 +1384,6 @@ prw(int fd, void *mem, size_t count,
{
off_t old;
ssize_t r;
int restore_errno;
int saved_errno = 0;
if ((old = lseek_eintr(fd, (off_t)0, SEEK_CUR)) == (off_t)-1)
@@ -1405,13 +1404,9 @@ prw(int fd, void *mem, size_t count,
if (r < 0)
saved_errno = errno;
restore_errno = errno;
if (lseek_eintr(fd, old, SEEK_SET) == (off_t)-1) {
if (saved_errno)
errno = saved_errno;
else
errno = restore_errno;
return -1;
}