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authorHamish Moffatt <hamish@cloud.net.au>2008-06-27 19:13:10 +0300
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-06-27 19:17:42 +0300
commit8ec6531393464519a9d2720c27be200d226c21fb (patch)
treea878a2020a8d7ea08385b28f47a5fa4b0386d9d9 /ubi-utils
parentc55490a0224af1147677977b5895c619aead3949 (diff)
ubiupdate: support reading from stdio
1. Adds -s/--size switch; 2. Allows the image file to be specified as '-', meaning stdin; if used, the size must be specified. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'ubi-utils')
-rw-r--r--ubi-utils/new-utils/src/ubiupdatevol.c75
1 files changed, 48 insertions, 27 deletions
diff --git a/ubi-utils/new-utils/src/ubiupdatevol.c b/ubi-utils/new-utils/src/ubiupdatevol.c
index ae7b9ff..dcedd66 100644
--- a/ubi-utils/new-utils/src/ubiupdatevol.c
+++ b/ubi-utils/new-utils/src/ubiupdatevol.c
@@ -48,6 +48,8 @@ struct args {
int devn;
char dev_name[256];
int broken_update;
+ int size;
+ int use_stdin;
};
static struct args args = {
@@ -62,6 +64,7 @@ static const char *optionsstr =
"-t, --truncate truncate volume (wipe it out)\n"
"-h, --help print help message\n"
"-V, --version print program version\n\n"
+"-s, --size=<bytes> bytes in input, if not reading from file\n"
"The following are compatibility options which are deprecated, do not use them\n"
"-d, --devn=<devn> UBI device number - may be used instead of the UBI\n"
" device node name in which case the utility assumes\n"
@@ -69,7 +72,7 @@ static const char *optionsstr =
"-B, --broken-update broken update, this is for testing";
static const char *usage =
-"Usage: " PROGRAM_NAME " <UBI volume node file name> [-t] [-h] [-V] [--truncate] [--help]\n"
+"Usage: " PROGRAM_NAME " <UBI volume node file name> [-t] [-h] [-V] [--truncate] [--size=x] [--help]\n"
"\t\t\t[--version] <image file>\n\n"
"Example 1: " PROGRAM_NAME " /dev/ubi0_1 fs.img - write file \"fs.img\" to UBI volume /dev/ubi0_1\n"
"Example 2: " PROGRAM_NAME " /dev/ubi0_1 -t - wipe out UBI volume /dev/ubi0_1";
@@ -78,6 +81,7 @@ struct option long_options[] = {
{ .name = "truncate", .has_arg = 0, .flag = NULL, .val = 't' },
{ .name = "help", .has_arg = 0, .flag = NULL, .val = 'h' },
{ .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' },
+ { .name = "size", .has_arg = 1, .flag = NULL, .val = 's' },
/* Deprecated -d and -B options */
{ .name = "devn", .has_arg = 1, .flag = NULL, .val = 'd' },
{ .name = "broken-update", .has_arg = 1, .flag = NULL, .val = 'B' },
@@ -88,8 +92,9 @@ static int parse_opt(int argc, char * const argv[])
{
while (1) {
int key;
+ char *endp;
- key = getopt_long(argc, argv, "n:th?Vd:", long_options, NULL);
+ key = getopt_long(argc, argv, "n:th?Vd:s:", long_options, NULL);
if (key == -1)
break;
@@ -98,6 +103,12 @@ static int parse_opt(int argc, char * const argv[])
args.truncate = 1;
break;
+ case 's':
+ args.size = strtoul(optarg, &endp, 0);
+ if (*endp != '\0' || endp == optarg || args.size < 0)
+ return errmsg("bad size: " "\"%s\"", optarg);
+ break;
+
case 'h':
case '?':
fprintf(stderr, "%s\n\n", doc);
@@ -106,16 +117,12 @@ static int parse_opt(int argc, char * const argv[])
exit(EXIT_SUCCESS);
case 'd':
- {
- char *endp;
-
/* Handle deprecated -d option */
warnmsg("-d is depricated and will be removed, do not use it");
args.devn = strtoul(optarg, &endp, 0);
if (*endp != '\0' || endp == optarg || args.devn < 0)
return errmsg("bad UBI device number: " "\"%s\"", optarg);
break;
- }
case 'B':
/* Handle deprecated -B option */
@@ -151,6 +158,11 @@ static int parse_opt(int argc, char * const argv[])
args.node = argv[optind];
args.img = argv[optind + 1];
+ if (strcmp(args.img, "-") == 0)
+ args.use_stdin = 1;
+ if (args.use_stdin && !args.size)
+ return errmsg("file size must be specified if input is stdin");
+
return 0;
}
@@ -202,20 +214,25 @@ static int update_volume(libubi_t libubi, struct ubi_vol_info *vol_info)
{
int err, fd, ifd;
long long bytes;
- struct stat st;
char *buf;
+ int leb_size = vol_info->leb_size;
- buf = malloc(vol_info->leb_size);
+ buf = malloc(leb_size);
if (!buf)
- return errmsg("cannot allocate %d bytes of memory", vol_info->leb_size);
+ return errmsg("cannot allocate %d bytes of memory", leb_size);
+
+ if (!args.size) {
+ struct stat st;
+ err = stat(args.img, &st);
+ if (err < 0) {
+ errmsg("stat failed on \"%s\"", args.img);
+ goto out_free;
+ }
- err = stat(args.img, &st);
- if (err < 0) {
- errmsg("stat failed on \"%s\"", args.img);
- goto out_free;
- }
+ bytes = st.st_size;
+ } else
+ bytes = args.size;
- bytes = st.st_size;
if (bytes > vol_info->rsvd_bytes) {
errmsg("\"%s\" (size %lld) will not fit volume \"%s\" (size %lld)",
args.img, bytes, args.node, vol_info->rsvd_bytes);
@@ -232,10 +249,14 @@ static int update_volume(libubi_t libubi, struct ubi_vol_info *vol_info)
goto out_free;
}
- ifd = open(args.img, O_RDONLY);
- if (ifd == -1) {
- sys_errmsg("cannot open \"%s\"", args.img);
- goto out_close1;
+ if (args.use_stdin)
+ ifd = STDIN_FILENO;
+ else {
+ ifd = open(args.img, O_RDONLY);
+ if (ifd == -1) {
+ sys_errmsg("cannot open \"%s\"", args.img);
+ goto out_close1;
+ }
}
err = ubi_update_start(libubi, fd, bytes);
@@ -245,27 +266,27 @@ static int update_volume(libubi_t libubi, struct ubi_vol_info *vol_info)
}
while (bytes) {
- int tocopy = vol_info->leb_size;
+ int ret;
- if (tocopy > bytes)
- tocopy = bytes;
+ if (leb_size > bytes)
+ leb_size = bytes;
- err = read(ifd, buf, tocopy);
- if (err != tocopy) {
+ ret = read(ifd, buf, leb_size);
+ if (ret <= 0) {
if (errno == EINTR) {
warnmsg("do not interrupt me!");
continue;
} else {
sys_errmsg("cannot read %d bytes from \"%s\"",
- tocopy, args.img);
+ leb_size, args.img);
goto out_close;
}
}
- err = ubi_write(fd, buf, tocopy);
+ err = ubi_write(fd, buf, ret);
if (err)
goto out_close;
- bytes -= tocopy;
+ bytes -= ret;
}
close(ifd);