sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

amdfwtool: Move the functions to handle_file.c

Browse Source 
Change-Id: I4cfec13cbc2a86dc352758541cce915a838e0d0f
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78305
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Zheng Bao
2023-10-10 11:15:07 +08:00
committed by Felix Held
parent 80b853e626
commit 92a9d93144
3 changed files with 90 additions and 87 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
util/amdfwtool/handle_file.c
View File

@@ -82,3 +82,86 @@ ssize_t write_from_buf_to_file(int fd, const void *buf, size_t buf_size)
return buf_size;
}
ssize_t write_body(char *output, void *body_offset, ssize_t body_size)
{
char body_name[PATH_MAX], body_tmp_name[PATH_MAX];
int ret;
int fd;
ssize_t bytes = -1;
/* Create a tmp file and rename it at the end so that make does not get confused
if amdfwtool is killed for some unexpected reasons. */
ret = snprintf(body_tmp_name, sizeof(body_tmp_name), "%s%s%s",
output, BODY_FILE_SUFFIX, TMP_FILE_SUFFIX);
if (ret < 0) {
fprintf(stderr, "Error %s forming BODY tmp file name: %d\n",
strerror(errno), ret);
return -1;
} else if ((unsigned int)ret >= sizeof(body_tmp_name)) {
fprintf(stderr, "BODY File name %d > %zu\n", ret, sizeof(body_tmp_name));
return -1;
}
fd = open(body_tmp_name, O_RDWR | O_CREAT | O_TRUNC, 0666);
if (fd < 0) {
fprintf(stderr, "Error: Opening %s file: %s\n", body_tmp_name, strerror(errno));
return -1;
}
bytes = write_from_buf_to_file(fd, body_offset, body_size);
if (bytes != body_size) {
fprintf(stderr, "Error: Writing to file %s failed\n", body_tmp_name);
return -1;
}
close(fd);
/* Rename the tmp file */
ret = snprintf(body_name, sizeof(body_name), "%s%s", output, BODY_FILE_SUFFIX);
if (ret < 0) {
fprintf(stderr, "Error %s forming BODY file name: %d\n", strerror(errno), ret);
return -1;
}
if (rename(body_tmp_name, body_name)) {
fprintf(stderr, "Error: renaming file %s to %s\n", body_tmp_name, body_name);
return -1;
}
return bytes;
}
ssize_t copy_blob(void *dest, const char *src_file, size_t room)
{
int fd;
struct stat fd_stat;
ssize_t bytes;
fd = open(src_file, O_RDONLY);
if (fd < 0) {
fprintf(stderr, "Error opening file: %s: %s\n",
src_file, strerror(errno));
return -1;
}
if (fstat(fd, &fd_stat)) {
fprintf(stderr, "fstat error: %s\n", strerror(errno));
close(fd);
return -2;
}
if ((size_t)fd_stat.st_size > room) {
fprintf(stderr, "Error: %s will not fit. Exiting.\n", src_file);
close(fd);
return -3;
}
bytes = read(fd, dest, (size_t)fd_stat.st_size);
close(fd);
if (bytes != (ssize_t)fd_stat.st_size) {
fprintf(stderr, "Error while reading %s\n", src_file);
return -4;
}
return bytes;
}