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util/nvmutil: reduced indentation in rw_file_once

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Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-13 03:12:51 +00:00
parent 172cbd4497
commit 5f6a721fa0
1 changed files with 18 additions and 16 deletions
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util/nvmutil/nvmutil.c
+18 -16
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@@ -1592,7 +1592,6 @@ rw_file_once(int fd, uint8_t *mem, size_t len,
ssize_t rv; ssize_t rv;
size_t retries_on_zero = 0; size_t retries_on_zero = 0;
size_t max_retries = 10; size_t max_retries = 10;
read_again: read_again:
rv = do_rw(fd, mem + rc, len - rc, off + rc, rw_type); rv = do_rw(fd, mem + rc, len - rc, off + rc, rw_type);
@@ -1612,27 +1611,30 @@ read_again:
if ((size_t)rv > SSIZE_MAX) { if ((size_t)rv > SSIZE_MAX) {
errno = EIO; errno = EIO;
return -1; return -1;
/* we will not tolerate your buggy libc */ /* we do not tolerate buggy libc */
} }
if ((size_t)rv > (len - rc) /* Prevent overflow */ if (!((size_t)rv > (len - rc) /* don't overflow */
|| rv == 0) { /* Prevent infinite 0-byte loop */ || rv == 0))
if (rv == 0) { return rv;
/*
* Fault tolerance against infinite /* Prevent infinite 0-byte loop */
* zero-byte loop: re-try a finite if (rv != 0) {
* number of times. This mitigates
* otherwise OK but slow filesystems
* e.g. NFS or slow media.
*/
if (retries_on_zero++ < max_retries)
goto read_again;
}
errno = EIO; errno = EIO;
return -1; return -1;
} }
/*
* Fault tolerance against infinite
* zero-byte loop: re-try a finite
* number of times. This mitigates
* otherwise OK but slow filesystems
* e.g. NFS or slow media.
*/
if (retries_on_zero++ < max_retries)
goto read_again;
return rv; errno = EIO;
return -1;
} }
static ssize_t static ssize_t