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-rw-r--r--contrib/syslinux/syslinux-4.03/libinstaller/advio.c162
1 files changed, 0 insertions, 162 deletions
diff --git a/contrib/syslinux/syslinux-4.03/libinstaller/advio.c b/contrib/syslinux/syslinux-4.03/libinstaller/advio.c
deleted file mode 100644
index 56f607d..0000000
--- a/contrib/syslinux/syslinux-4.03/libinstaller/advio.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/* ----------------------------------------------------------------------- *
- *
- * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved
- * Copyright 2010 Intel Corporation; author: H. Peter Anvin
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, Inc., 53 Temple Place Ste 330,
- * Boston MA 02111-1307, USA; either version 2 of the License, or
- * (at your option) any later version; incorporated herein by reference.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * advio.c
- *
- * Linux ADV I/O
- *
- * Return 0 on success, -1 on error, and set errno.
- *
- */
-#define _GNU_SOURCE
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include "syslxint.h"
-#include "syslxcom.h"
-
-/*
- * Read the ADV from an existing instance, or initialize if invalid.
- * Returns -1 on fatal errors, 0 if ADV is okay, 1 if the ADV is
- * invalid, and 2 if the file does not exist.
- */
-int read_adv(const char *path, const char *cfg)
-{
- char *file;
- int fd = -1;
- struct stat st;
- int err = 0;
- int rv;
-
- rv = asprintf(&file, "%s%s%s", path,
- path[0] && path[strlen(path) - 1] == '/' ? "" : "/", cfg);
-
- if (rv < 0 || !file) {
- perror(program);
- return -1;
- }
-
- fd = open(file, O_RDONLY);
- if (fd < 0) {
- if (errno != ENOENT) {
- err = -1;
- } else {
- syslinux_reset_adv(syslinux_adv);
- err = 2; /* Nonexistence is not a fatal error */
- }
- } else if (fstat(fd, &st)) {
- err = -1;
- } else if (st.st_size < 2 * ADV_SIZE) {
- /* Too small to be useful */
- syslinux_reset_adv(syslinux_adv);
- err = 0; /* Nothing to read... */
- } else if (xpread(fd, syslinux_adv, 2 * ADV_SIZE,
- st.st_size - 2 * ADV_SIZE) != 2 * ADV_SIZE) {
- err = -1;
- } else {
- /* We got it... maybe? */
- err = syslinux_validate_adv(syslinux_adv) ? 1 : 0;
- }
-
- if (err < 0)
- perror(file);
-
- if (fd >= 0)
- close(fd);
-
- free(file);
-
- return err;
-}
-
-/*
- * Update the ADV in an existing installation.
- */
-int write_adv(const char *path, const char *cfg)
-{
- unsigned char advtmp[2 * ADV_SIZE];
- char *file;
- int fd = -1;
- struct stat st, xst;
- int err = 0;
- int rv;
-
- rv = asprintf(&file, "%s%s%s", path,
- path[0] && path[strlen(path) - 1] == '/' ? "" : "/", cfg);
-
- if (rv < 0 || !file) {
- perror(program);
- return -1;
- }
-
- fd = open(file, O_RDONLY);
- if (fd < 0) {
- err = -1;
- } else if (fstat(fd, &st)) {
- err = -1;
- } else if (st.st_size < 2 * ADV_SIZE) {
- /* Too small to be useful */
- err = -2;
- } else if (xpread(fd, advtmp, 2 * ADV_SIZE,
- st.st_size - 2 * ADV_SIZE) != 2 * ADV_SIZE) {
- err = -1;
- } else {
- /* We got it... maybe? */
- err = syslinux_validate_adv(advtmp) ? -2 : 0;
- if (!err) {
- /* Got a good one, write our own ADV here */
- clear_attributes(fd);
-
- /* Need to re-open read-write */
- close(fd);
- fd = open(file, O_RDWR | O_SYNC);
- if (fd < 0) {
- err = -1;
- } else if (fstat(fd, &xst) || xst.st_ino != st.st_ino ||
- xst.st_dev != st.st_dev || xst.st_size != st.st_size) {
- fprintf(stderr, "%s: race condition on write\n", file);
- err = -2;
- }
- /* Write our own version ... */
- if (xpwrite(fd, syslinux_adv, 2 * ADV_SIZE,
- st.st_size - 2 * ADV_SIZE) != 2 * ADV_SIZE) {
- err = -1;
- }
-
- sync();
- set_attributes(fd);
- }
- }
-
- if (err == -2)
- fprintf(stderr, "%s: cannot write auxilliary data (need --update)?\n",
- file);
- else if (err == -1)
- perror(file);
-
- if (fd >= 0)
- close(fd);
- if (file)
- free(file);
-
- return err;
-}