Hi,
Gentle ping
Please help review this.
--
Thanks,
Ritika
On 2/11/22, 3:51 PM, Ritika Srivastava wrote:
Add -P, partition scanning option to kpartx which would set
LO_FLAGS_PARTSCAN flag during loop device creation.
This option is same as losetup -P option.
Signed-off-by: Ritika Srivastava <[email protected]>
---
kpartx/kpartx.c | 17 +++++++++++++----
kpartx/lopart.c | 5 ++++-
kpartx/lopart.h | 2 +-
3 files changed, 18 insertions(+), 6 deletions(-)
diff --git a/kpartx/kpartx.c b/kpartx/kpartx.c
index 3c49999..a26d0a2 100644
--- a/kpartx/kpartx.c
+++ b/kpartx/kpartx.c
@@ -87,7 +87,7 @@ initpts(void)
addpts("ps3", read_ps3_pt);
}
-static char short_opts[] = "rladfgvp:t:snu";
+static char short_opts[] = "rladfPgvp:t:snu";
/* Used in gpt.c */
int force_gpt=0;
@@ -98,7 +98,7 @@ static int
usage(void) {
printf(VERSION_STRING);
printf("Usage:\n");
- printf(" kpartx [-a|-d|-u|-l] [-r] [-p] [-f] [-g] [-s|-n] [-v]
wholedisk\n");
+ printf(" kpartx [-a|-d|-u|-l] [-r] [-p] [-f] [-g] [-s|-n] [-v] [-P]
wholedisk\n");
printf("\t-a add partition devmappings\n");
printf("\t-r devmappings will be readonly\n");
printf("\t-d del partition devmappings\n");
@@ -110,6 +110,7 @@ usage(void) {
printf("\t-v verbose\n");
printf("\t-n nosync mode. Return before the partitions are created\n");
printf("\t-s sync mode (Default). Don't return until the partitions are
created\n");
+ printf("\t-P create partitioned loop device\n");
return 1;
}
@@ -228,7 +229,7 @@ xmalloc (size_t size) {
int
main(int argc, char **argv){
- int i, j, m, n, op, off, arg, c, d, ro=0;
+ int i, j, m, n, op, off, arg, c, d, ro=0, partscan = 0;
int fd = -1;
struct slice all;
struct pt *ptp;
@@ -311,6 +312,9 @@ main(int argc, char **argv){
case 'u':
what = UPDATE;
break;
+ case 'P':
+ partscan = 1;
+ break;
default:
usage();
exit(1);
@@ -328,6 +332,11 @@ main(int argc, char **argv){
exit(1);
}
+ if (what != ADD && partscan == 1) {
+ printf("-P option is allowed only during loop device setup\n");
+ exit(1);
+ }
+
if (hotplug) {
/* already got [disk]device */
} else if (optind == argc-2) {
@@ -359,7 +368,7 @@ main(int argc, char **argv){
exit (0);
if (!loopdev) {
- if (set_loop(&loopdev, rpath, 0, &ro)) {
+ if (set_loop(&loopdev, rpath, 0, &ro, partscan)) {
fprintf(stderr, "can't set up loop\n");
exit (1);
}
diff --git a/kpartx/lopart.c b/kpartx/lopart.c
index 512a59f..9a1ce48 100644
--- a/kpartx/lopart.c
+++ b/kpartx/lopart.c
@@ -233,7 +233,8 @@ no_loop_fd:
return NULL;
}
-int set_loop(char **device, const char *file, int offset, int *loopro)
+int set_loop(char **device, const char *file, int offset, int *loopro,
+ int partscan)
{
struct loop_info loopinfo;
int fd = -1, ret = 1, ffd, mode;
@@ -264,6 +265,8 @@ int set_loop(char **device, const char *file, int
offset, int *loopro)
loopinfo.lo_offset = offset;
loopinfo.lo_encrypt_type = LO_CRYPT_NONE;
loopinfo.lo_encrypt_key_size = 0;
+ if (partscan == 1)
+ loopinfo.lo_flags |= LO_FLAGS_PARTSCAN;
if (ioctl(fd, LOOP_SET_FD, (void*)(uintptr_t)(ffd)) < 0) {
perror ("ioctl: LOOP_SET_FD");
diff --git a/kpartx/lopart.h b/kpartx/lopart.h
index c73ab23..81534e2 100644
--- a/kpartx/lopart.h
+++ b/kpartx/lopart.h
@@ -1,4 +1,4 @@
extern int verbose;
-extern int set_loop (char **, const char *, int, int *);
+extern int set_loop (char **, const char *, int, int *, int);
extern int del_loop (const char *);
extern char * find_loop_by_file (const char *);
--
2.27.0
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