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-rw-r--r--tools/firmware-utils/src/jcgimage.c94
1 files changed, 46 insertions, 48 deletions
diff --git a/tools/firmware-utils/src/jcgimage.c b/tools/firmware-utils/src/jcgimage.c
index 354c26be19..06fbb9f03e 100644
--- a/tools/firmware-utils/src/jcgimage.c
+++ b/tools/firmware-utils/src/jcgimage.c
@@ -148,12 +148,12 @@ opensize(char *name, size_t *size)
{
struct stat s;
int fd = open(name, O_RDONLY);
- if (fd < 0) {
+ if (fd < 0)
err(1, "cannot open \"%s\"", name);
- }
- if (fstat(fd, &s) == -1) {
+
+ if (fstat(fd, &s) == -1)
err(1, "cannot stat \"%s\"", name);
- }
+
*size = s.st_size;
return fd;
}
@@ -183,17 +183,15 @@ mkjcgheader(struct jcg_header *h, size_t psize, char *version)
void *payload = (void *)h + sizeof(*h);
time_t t;
- if (source_date_epoch != -1) {
+ if (source_date_epoch != -1)
t = source_date_epoch;
- } else if ((time(&t) == (time_t)(-1))) {
+ else if ((time(&t) == (time_t)(-1)))
err(1, "time call failed");
- }
- if (version != NULL) {
- if (sscanf(version, "%hu.%hu", &major, &minor) != 2) {
+
+ if (version != NULL)
+ if (sscanf(version, "%hu.%hu", &major, &minor) != 2)
err(1, "cannot parse version \"%s\"", version);
- }
- }
memset(h, 0, sizeof(*h));
h->jh_magic = htonl(JH_MAGIC);
@@ -267,14 +265,14 @@ craftcrc(uint32_t dcrc, uint8_t *buf, size_t len)
a = ~dcrc;
for (i = 0; i < 32; i++) {
- if (patch & 1) {
+ if (patch & 1)
patch = (patch >> 1) ^ 0xedb88320L;
- } else {
+ else
patch >>= 1;
- }
- if (a & 1) {
+
+ if (a & 1)
patch ^= 0x5b358fd3L;
- }
+
a >>= 1;
}
patch ^= ~crc32(crc, buf, len - 4);
@@ -285,10 +283,10 @@ craftcrc(uint32_t dcrc, uint8_t *buf, size_t len)
/* Verify that we actually get the desired result */
crc = crc32(0L, Z_NULL, 0);
crc = crc32(crc, buf, len);
- if (crc != dcrc) {
+ if (crc != dcrc)
errx(1, "CRC patching is broken: wanted %08x, but got %08x.",
dcrc, crc);
- }
+
}
void
@@ -332,23 +330,23 @@ main(int argc, char **argv)
imagefile = optarg;
break;
case 'k':
- if (mode == MODE_UIMAGE) {
+ if (mode == MODE_UIMAGE)
errx(1,"-k cannot be combined with -u");
- }
+
mode = MODE_KR;
file1 = optarg;
break;
case 'f':
- if (mode == MODE_UIMAGE) {
+ if (mode == MODE_UIMAGE)
errx(1,"-f cannot be combined with -u");
- }
+
mode = MODE_KR;
file2 = optarg;
break;
case 'u':
- if (mode == MODE_KR) {
+ if (mode == MODE_KR)
errx(1,"-u cannot be combined with -k and -r");
- }
+
mode = MODE_UIMAGE;
file1 = optarg;
break;
@@ -360,19 +358,19 @@ main(int argc, char **argv)
usage();
}
}
- if (optind != argc) {
+ if (optind != argc)
errx(1, "illegal arg \"%s\"", argv[optind]);
- }
- if (imagefile == NULL) {
+
+ if (imagefile == NULL)
errx(1, "no output file specified");
- }
- if (mode == MODE_UNKNOWN) {
+
+ if (mode == MODE_UNKNOWN)
errx(1, "specify either -u or -k and -r");
- }
+
if (mode == MODE_KR) {
- if (file1 == NULL || file2 == NULL) {
- errx(1,"need -k and -r");
- }
+ if (file1 == NULL || file2 == NULL)
+ errx(1, "need -k and -r");
+
fd2 = opensize(file2, &size2);
}
fd1 = opensize(file1, &size1);
@@ -387,37 +385,37 @@ main(int argc, char **argv)
sizeo = sizeof(*jh) + sizeu;
}
- if (sizeo > MAXSIZE) {
- errx(1,"payload too large: %zd > %zd\n", sizeo, MAXSIZE);
- }
+ if (sizeo > MAXSIZE)
+ errx(1, "payload too large: %zd > %zd\n", sizeo, MAXSIZE);
+
fdo = open(imagefile, O_RDWR | O_CREAT | O_TRUNC, 00644);
- if (fdo < 0) {
+ if (fdo < 0)
err(1, "cannot open \"%s\"", imagefile);
- }
- if (ftruncate(fdo, sizeo) == -1) {
+
+ if (ftruncate(fdo, sizeo) == -1)
err(1, "cannot grow \"%s\" to %zd bytes", imagefile, sizeo);
- }
+
map = mmap(NULL, sizeo, PROT_READ|PROT_WRITE, MAP_SHARED, fdo, 0);
uh = map + sizeof(*jh);
- if (map == MAP_FAILED) {
+ if (map == MAP_FAILED)
err(1, "cannot mmap \"%s\"", imagefile);
- }
- if (read(fd1, map + off1, size1) != size1) {
+
+ if (read(fd1, map + off1, size1) != size1)
err(1, "cannot copy %s", file1);
- }
+
if (mode == MODE_KR) {
- if (read(fd2, map+off2, size2) != size2) {
+ if (read(fd2, map+off2, size2) != size2)
err(1, "cannot copy %s", file2);
- }
+
mkuheader(uh, size1, size2);
- } else if (mode == MODE_UIMAGE) {
+ } else if (mode == MODE_UIMAGE)
craftcrc(ntohl(uh->ih_dcrc), (void*)uh + sizeof(*uh),
sizeu - sizeof(*uh));
- }
+
mkjcgheader(map, sizeu, version);
munmap(map, sizeo);
close(fdo);