forked from pool/util-linux
7f2aa2aa8e
1 OBS-URL: https://build.opensuse.org/request/show/487606 OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/util-linux?expand=0&rev=217
141 lines
5.0 KiB
Diff
141 lines
5.0 KiB
Diff
Index: util-linux-2.29/include/loopdev.h
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===================================================================
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--- util-linux-2.29.orig/include/loopdev.h
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+++ util-linux-2.29/include/loopdev.h
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@@ -41,6 +41,7 @@ enum {
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LO_FLAGS_AUTOCLEAR = 4, /* kernel >= 2.6.25 */
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LO_FLAGS_PARTSCAN = 8, /* kernel >= 3.2 */
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LO_FLAGS_DIRECT_IO = 16, /* kernel >= 4.2 */
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+ LO_FLAGS_BLOCKSIZE = 32, /* Tentative */
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};
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#define LO_NAME_SIZE 64
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@@ -120,7 +121,8 @@ enum {
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LOOPDEV_FL_NOIOCTL = (1 << 6),
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LOOPDEV_FL_DEVSUBDIR = (1 << 7),
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LOOPDEV_FL_CONTROL = (1 << 8), /* system with /dev/loop-control */
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- LOOPDEV_FL_SIZELIMIT = (1 << 9)
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+ LOOPDEV_FL_SIZELIMIT = (1 << 9),
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+ LOOPDEV_FL_BLOCKSIZE = (1 << 10)
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};
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/*
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@@ -173,6 +175,7 @@ int loopcxt_set_offset(struct loopdev_cx
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int loopcxt_set_sizelimit(struct loopdev_cxt *lc, uint64_t sizelimit);
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int loopcxt_set_flags(struct loopdev_cxt *lc, uint32_t flags);
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int loopcxt_set_backing_file(struct loopdev_cxt *lc, const char *filename);
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+int loopcxt_set_blocksize(struct loopdev_cxt *lc, uint64_t blocksize);
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extern char *loopcxt_get_backing_file(struct loopdev_cxt *lc);
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extern int loopcxt_get_backing_devno(struct loopdev_cxt *lc, dev_t *devno);
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Index: util-linux-2.29/lib/loopdev.c
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===================================================================
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--- util-linux-2.29.orig/lib/loopdev.c
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+++ util-linux-2.29/lib/loopdev.c
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@@ -1115,6 +1115,26 @@ int loopcxt_set_backing_file(struct loop
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}
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/*
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+ * @lc: context
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+ * @blocksize: logical blocksize for the device
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+ *
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+ * The setting is removed by loopcxt_set_device() loopcxt_next()!
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+ *
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+ * Returns: 0 on success, <0 on error.
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+ */
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+int loopcxt_set_blocksize(struct loopdev_cxt *lc, uint64_t blocksize)
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+{
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+ if (!lc)
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+ return -EINVAL;
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+
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+ lc->info.lo_init[0] = blocksize;
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+ lc->info.lo_flags |= LO_FLAGS_BLOCKSIZE;
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+
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+ DBG(CXT, ul_debugobj(lc, "set blocksize=%llu", (long long unsigned int)lc->info.lo_init[0]));
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+ return 0;
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+}
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+
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+/*
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* In kernels prior to v3.9, if the offset or sizelimit options
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* are used, the block device's size won't be synced automatically.
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* blockdev --getsize64 and filesystems will use the backing
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Index: util-linux-2.29/sys-utils/losetup.c
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===================================================================
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--- util-linux-2.29.orig/sys-utils/losetup.c
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+++ util-linux-2.29/sys-utils/losetup.c
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@@ -398,6 +398,7 @@ static void usage(FILE *out)
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fputs(_(" -o, --offset <num> start at offset <num> into file\n"), out);
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fputs(_(" --sizelimit <num> device is limited to <num> bytes of the file\n"), out);
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+ fputs(_(" --logical-blocksize <size> set the logical block size to <size>\n"), out);
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fputs(_(" -P, --partscan create a partitioned loop device\n"), out);
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fputs(_(" -r, --read-only set up a read-only loop device\n"), out);
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fputs(_(" --direct-io[=<on|off>] open backing file with O_DIRECT\n"), out);
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@@ -447,7 +448,8 @@ static void warn_size(const char *filena
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static int create_loop(struct loopdev_cxt *lc,
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int nooverlap, int lo_flags, int flags,
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- const char *file, uint64_t offset, uint64_t sizelimit)
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+ const char *file, uint64_t offset, uint64_t sizelimit,
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+ uint64_t blocksize)
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{
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int hasdev = loopcxt_has_device(lc);
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int rc = 0;
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@@ -533,6 +535,8 @@ static int create_loop(struct loopdev_cx
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loopcxt_set_offset(lc, offset);
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if (flags & LOOPDEV_FL_SIZELIMIT)
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loopcxt_set_sizelimit(lc, sizelimit);
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+ if (flags & LOOPDEV_FL_BLOCKSIZE)
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+ loopcxt_set_blocksize(lc, blocksize);
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if (lo_flags)
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loopcxt_set_flags(lc, lo_flags);
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if ((rc = loopcxt_set_backing_file(lc, file))) {
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@@ -561,7 +565,7 @@ int main(int argc, char **argv)
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struct loopdev_cxt lc;
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int act = 0, flags = 0, no_overlap = 0, c;
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char *file = NULL;
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- uint64_t offset = 0, sizelimit = 0;
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+ uint64_t offset = 0, sizelimit = 0, blocksize = 0;
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int res = 0, showdev = 0, lo_flags = 0;
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char *outarg = NULL;
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int list = 0;
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@@ -571,7 +575,8 @@ int main(int argc, char **argv)
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OPT_SIZELIMIT = CHAR_MAX + 1,
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OPT_SHOW,
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OPT_RAW,
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- OPT_DIO
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+ OPT_DIO,
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+ OPT_BLOCKSIZE,
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};
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static const struct option longopts[] = {
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{ "all", 0, 0, 'a' },
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@@ -584,6 +589,7 @@ int main(int argc, char **argv)
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{ "associated", 1, 0, 'j' },
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{ "json", 0, 0, 'J' },
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{ "list", 0, 0, 'l' },
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+ { "logical-blocksize", 1, 0, OPT_BLOCKSIZE },
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{ "noheadings", 0, 0, 'n' },
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{ "offset", 1, 0, 'o' },
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{ "output", 1, 0, 'O' },
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@@ -657,6 +663,10 @@ int main(int argc, char **argv)
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act = A_SHOW;
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file = optarg;
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break;
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+ case OPT_BLOCKSIZE:
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+ blocksize = strtosize_or_err(optarg, _("failed to parse logical block size"));
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+ flags |= LOOPDEV_FL_BLOCKSIZE;
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+ break;
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case 'l':
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list = 1;
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break;
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@@ -789,7 +799,8 @@ int main(int argc, char **argv)
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switch (act) {
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case A_CREATE:
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- res = create_loop(&lc, no_overlap, lo_flags, flags, file, offset, sizelimit);
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+ res = create_loop(&lc, no_overlap, lo_flags, flags, file, offset,
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+ sizelimit, blocksize);
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if (res == 0) {
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if (showdev)
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printf("%s\n", loopcxt_get_device(&lc));
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