diff options
| author |   mpf <mpf@openbsd.org> | 2009-11-10 23:55:12 +0000 |
|---|---|---|
| committer | mpf <mpf@openbsd.org> | 2009-11-10 23:55:12 +0000 |
| commit | f7bc645e69627a930b2433cf8a1f657f28ca6b8a (patch) | |
| tree | 4a575b534aa6d0adf8c6092f83f5d42839c6d67d /sys/dev/microcode/udl/build.c | |
| parent | Handle LOMlite2 in an interrupt-driven way; avoids using delay(9) once the (diff) | |
| download | wireguard-openbsd-f7bc645e69627a930b2433cf8a1f657f28ca6b8a.tar.xz wireguard-openbsd-f7bc645e69627a930b2433cf8a1f657f28ca6b8a.zip | |
Use buffered fwrite(3) to build the udl Huffman table,
rather than doing 131074 write(2)s.
OK mglocker, deraadt.
Diffstat (limited to 'sys/dev/microcode/udl/build.c')
| -rw-r--r-- | sys/dev/microcode/udl/build.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/sys/dev/microcode/udl/build.c b/sys/dev/microcode/udl/build.c index cf9e1f1e12c..8032b124ebc 100644 --- a/sys/dev/microcode/udl/build.c +++ b/sys/dev/microcode/udl/build.c @@ -1,4 +1,4 @@ -/* $OpenBSD: build.c,v 1.5 2009/08/26 12:32:27 mglocker Exp $ */ +/* $OpenBSD: build.c,v 1.6 2009/11/10 23:55:12 mpf Exp $ */ /* * Copyright (c) 2009 Marcus Glocker <mglocker@openbsd.org> @@ -20,6 +20,7 @@ #include <err.h> #include <fcntl.h> +#include <stdio.h> #include <unistd.h> #include "udl_huffman.h" @@ -29,24 +30,24 @@ int main(void) { - int fd, i; + int i; + FILE *file; uint32_t bit_count; uint32_t bit_pattern; - fd = open(FILENAME, O_WRONLY | O_CREAT | O_TRUNC, 0644); - if (fd == -1) - err(1, "%s", FILENAME); + if ((file = fopen(FILENAME, "w")) == NULL) + err(1, "fopen %s", FILENAME); for (i = 0; i < UDL_HUFFMAN_RECORDS; i++) { bit_count = udl_huffman[i].bit_count; bit_pattern = htobe32(udl_huffman[i].bit_pattern); - if (write(fd, &bit_count, sizeof(bit_count)) == -1) - err(1, "write"); - if (write(fd, &bit_pattern, sizeof(bit_pattern)) == -1) - err(1, "write"); + if (fwrite(&bit_count, sizeof(bit_count), 1, file) != 1) + err(1, "fwrite"); + if (fwrite(&bit_pattern, sizeof(bit_pattern), 1, file) != 1) + err(1, "fwrite"); } - close(fd); + fclose(file); return (0); } |