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lbutils/file: rename rw_file_exact

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call it rw_exact, so that it's closer to
the name rw. it matches naming more closely;
the alternative was to call rw rw_file

but read/write can handle more than just files!

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-04-01 16:20:12 +01:00
parent f68cedf202
commit fb81b7b736
4 changed files with 15 additions and 15 deletions
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util/libreboot-utils/lib/file.c
+9 -9
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@@ -127,7 +127,7 @@ err_fsync_dir:
return with_fallback_errno(EIO);
}
/* rw_file_exact() - Read perfectly or die
/* rw_exact() - Read perfectly or die
*
* Read/write, and absolutely insist on an
* absolute read; e.g. if 100 bytes are
@@ -145,7 +145,7 @@ err_fsync_dir:
*/
ssize_t
rw_file_exact(int fd, unsigned char *mem, size_t nrw,
rw_exact(int fd, unsigned char *mem, size_t nrw,
off_t off, int rw_type)
{
int saved_errno = errno;
@@ -157,13 +157,13 @@ rw_file_exact(int fd, unsigned char *mem, size_t nrw,
errno = 0;
if (io_args(fd, mem, nrw, off, rw_type) == -1)
goto err_rw_file_exact;
goto err_rw_exact;
while (1) {
/* Prevent theoretical overflow */
if (if_err(rval >= 0 && (size_t)rval > (nrw - rc), EOVERFLOW))
goto err_rw_file_exact;
goto err_rw_exact;
rc += rval;
if ((size_t)rc >= nrw)
@@ -173,22 +173,22 @@ rw_file_exact(int fd, unsigned char *mem, size_t nrw,
nrw_cur = (size_t)(nrw - (size_t)rc);
if (if_err(off < 0, EOVERFLOW))
goto err_rw_file_exact;
goto err_rw_exact;
off_cur = off + (off_t)rc;
if ((rval = rw(fd, mem_cur, nrw_cur, off_cur, rw_type)) <= 0)
goto err_rw_file_exact;
goto err_rw_exact;
}
if (if_err((size_t)rc != nrw, EIO) ||
(rval = rw_over_nrw(rc, nrw)) < 0)
goto err_rw_file_exact;
goto err_rw_exact;
reset_caller_errno(rval);
return rval;
err_rw_file_exact:
err_rw_exact:
return with_fallback_errno(EIO);
}
@@ -202,7 +202,7 @@ err_rw_file_exact:
*
* WARNING: this function allows zero-byte returns.
* this is intentional, to mimic libc behaviour.
* use rw_file_exact if you need to avoid this.
* use rw_exact if you need to avoid this.
* (ditto partial writes/reads)
*
*/