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libreboot-utils: loop fcntl on eintr

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but i can't write a generic function for this,
because fcntl is a variadic function, so wrapping
cannot be done cleanly.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-04-01 06:17:25 +01:00
parent f90af15502
commit df5bb1c894
2 changed files with 20 additions and 6 deletions
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util/libreboot-utils/lib/mkhtemp.c
+14 -5
View File
@@ -744,15 +744,21 @@ int secure_file(int *fd,
int do_lock,
mode_t mode)
{
int flags;
int flags = -1;
struct stat st_now;
int saved_errno = errno;
errno = 0;
if (if_err(fd == NULL || st == NULL, EFAULT) ||
if_err(*fd < 0, EBADF) ||
if_err_sys((flags = fcntl(*fd, F_GETFL)) == -1) ||
if_err(bad_flags > 0 && (flags & bad_flags), EPERM))
if_err(*fd < 0, EBADF))
goto err_demons;
while (fs_retry(saved_errno,
flags = fcntl(*fd, F_GETFL)));
if (flags == -1)
goto err_demons;
if (if_err(bad_flags > 0 && (flags & bad_flags), EPERM))
goto err_demons;
if (expected != NULL) {
@@ -878,6 +884,7 @@ lock_file(int fd, int flags)
{
struct flock fl;
int saved_errno = errno;
int fcntl_rval = -1;
errno = 0;
if (if_err(fd < 0, EBADF) ||
@@ -893,7 +900,9 @@ lock_file(int fd, int flags)
fl.l_whence = SEEK_SET;
if (fcntl(fd, F_SETLK, &fl) == -1)
while (fs_retry(saved_errno,
fcntl_rval = fcntl(fd, F_SETLK, &fl)));
if (fcntl_rval == -1)
goto err_lock_file;
reset_caller_errno(0);