f080cd5463
To reduce the size of amdfwtool.c which is already too big. Change-Id: Ib80eeb42f59a3dda04402b2feaadc1d178ed989e Signed-off-by: Zheng Bao <fishbaozi@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/73910 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#include <fcntl.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include "amdfwtool.h"
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void write_or_fail(int fd, void *ptr, size_t size)
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{
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ssize_t written;
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written = write_from_buf_to_file(fd, ptr, size);
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if (written < 0 || (size_t)written != size) {
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fprintf(stderr, "%s: Error writing %zu bytes - written %zd bytes\n",
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__func__, size, written);
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exit(-1);
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}
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}
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ssize_t read_from_file_to_buf(int fd, void *buf, size_t buf_size)
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{
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ssize_t bytes;
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size_t total_bytes = 0;
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do {
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bytes = read(fd, buf + total_bytes, buf_size - total_bytes);
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if (bytes == 0) {
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fprintf(stderr, "Reached EOF probably\n");
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break;
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}
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if (bytes < 0 && errno == EAGAIN)
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bytes = 0;
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if (bytes < 0) {
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fprintf(stderr, "Read failure %s\n", strerror(errno));
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return bytes;
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}
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total_bytes += bytes;
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} while (total_bytes < buf_size);
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if (total_bytes != buf_size) {
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fprintf(stderr, "Read data size(%zu) != buffer size(%zu)\n",
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total_bytes, buf_size);
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return -1;
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}
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return buf_size;
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}
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ssize_t write_from_buf_to_file(int fd, const void *buf, size_t buf_size)
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{
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ssize_t bytes;
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size_t total_bytes = 0;
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do {
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bytes = write(fd, buf + total_bytes, buf_size - total_bytes);
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if (bytes < 0 && errno == EAGAIN)
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bytes = 0;
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if (bytes < 0) {
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fprintf(stderr, "Write failure %s\n", strerror(errno));
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lseek(fd, SEEK_CUR, -total_bytes);
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return bytes;
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}
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total_bytes += bytes;
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} while (total_bytes < buf_size);
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if (total_bytes != buf_size) {
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fprintf(stderr, "Wrote more data(%zu) than buffer size(%zu)\n",
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total_bytes, buf_size);
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lseek(fd, SEEK_CUR, -total_bytes);
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return -1;
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}
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return buf_size;
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}
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