#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
+#include <attr/xattr.h>
#include <fcntl.h>
#include <dirent.h>
#include <time.h>
#include <ctype.h>
#include <zlib.h>
#include <libgen.h>
+#include <asm/byteorder.h>
#include "lfs_project.h"
#include <libcfs/util/string.h>
static int lfs_swap_layouts(int argc, char **argv);
static int lfs_mv(int argc, char **argv);
static int lfs_ladvise(int argc, char **argv);
+static int lfs_getsom(int argc, char **argv);
static int lfs_mirror(int argc, char **argv);
static int lfs_mirror_list_commands(int argc, char **argv);
static int lfs_list_commands(int argc, char **argv);
"lfs mirror split - split a mirror from an existing mirrored file\n"
"lfs mirror resync - resynchronize out-of-sync mirrored file(s)\n"
"lfs mirror verify - verify mirrored file(s)\n"},
+ {"getsom", lfs_getsom, 0, "To list the SOM info for a given file.\n"
+ "usage: getsom [-s] [-b] [-f] <path>\n"
+ "\t-s: Only show the size value of the SOM data for a given file\n"
+ "\t-b: Only show the blocks value of the SOM data for a given file\n"
+ "\t-f: Only show the flags value of the SOM data for a given file\n"},
{"help", Parser_help, 0, "help"},
{"exit", Parser_quit, 0, "quit"},
{"quit", Parser_quit, 0, "quit"},
return rc < 0 ? -rc : rc;
}
+static void lustre_som_swab(struct lustre_som_attrs *attrs)
+{
+#if __BYTE_ORDER == __BIG_ENDIAN
+ __swab16s(&attrs->lsa_valid);
+ __swab64s(&attrs->lsa_size);
+ __swab64s(&attrs->lsa_blocks);
+#endif
+}
+
+enum lfs_som_type {
+ LFS_SOM_SIZE = 0x1,
+ LFS_SOM_BLOCKS = 0x2,
+ LFS_SOM_FLAGS = 0x4,
+ LFS_SOM_ATTR_ALL = LFS_SOM_SIZE | LFS_SOM_BLOCKS |
+ LFS_SOM_FLAGS,
+};
+
+static int lfs_getsom(int argc, char **argv)
+{
+ const char *path;
+ struct lustre_som_attrs *attrs;
+ char buf[sizeof(*attrs) + 64];
+ enum lfs_som_type type = LFS_SOM_ATTR_ALL;
+ int rc = 0, c;
+
+ while ((c = getopt(argc, argv, "sbf")) != -1) {
+ switch (c) {
+ case 's':
+ type = LFS_SOM_SIZE;
+ break;
+ case 'b':
+ type = LFS_SOM_BLOCKS;
+ break;
+ case 'f':
+ type = LFS_SOM_FLAGS;
+ break;
+ default:
+ fprintf(stderr, "%s: invalid option '%c'\n",
+ progname, optopt);
+ return CMD_HELP;
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (argc != 1) {
+ fprintf(stderr, "%s: %s\n",
+ progname, argc == 0 ? "miss file target" :
+ "input more than 2 files");
+ return CMD_HELP;
+ }
+
+ path = argv[0];
+ attrs = (void *)buf;
+ rc = lgetxattr(path, "trusted.som", attrs, sizeof(buf));
+ if (rc < 0) {
+ fprintf(stderr, "%s failed to get som xattr: %s\n", argv[0],
+ strerror(-rc));
+ return rc;
+ }
+
+ lustre_som_swab(attrs);
+
+ switch (type) {
+ case LFS_SOM_ATTR_ALL:
+ printf("file: %s size: %llu blocks: %llu flags: %x\n",
+ path, attrs->lsa_size, attrs->lsa_blocks,
+ attrs->lsa_valid);
+ break;
+ case LFS_SOM_SIZE:
+ printf("%llu\n", attrs->lsa_size);
+ break;
+ case LFS_SOM_BLOCKS:
+ printf("%llu\n", attrs->lsa_blocks);
+ break;
+ case LFS_SOM_FLAGS:
+ printf("%x\n", attrs->lsa_valid);
+ break;
+ default:
+ fprintf(stderr, "%s: unknown option\n", progname);
+ return CMD_HELP;
+ }
+
+ return rc;
+}
+
/**
* lfs_mirror_list_commands() - List lfs mirror commands.
* @argc: The count of command line arguments.