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[Gfarm-commits] SF.net SVN: gfarm:[8861] gfarm_v2/branches/2.5/gftool/gfxattr/gfxattr.c
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From: <ta...@us...> - 2014-02-10 07:10:05
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Revision: 8861
http://sourceforge.net/p/gfarm/code/8861
Author: tatebe
Date: 2014-02-10 07:09:59 +0000 (Mon, 10 Feb 2014)
Log Message:
-----------
gfxattr - -I option to manipulate the extended attribute by inum
Modified Paths:
--------------
gfarm_v2/branches/2.5/gftool/gfxattr/gfxattr.c
Modified: gfarm_v2/branches/2.5/gftool/gfxattr/gfxattr.c
===================================================================
--- gfarm_v2/branches/2.5/gftool/gfxattr/gfxattr.c 2014-02-10 06:43:12 UTC (rev 8860)
+++ gfarm_v2/branches/2.5/gftool/gfxattr/gfxattr.c 2014-02-10 07:09:59 UTC (rev 8861)
@@ -26,33 +26,27 @@
#define DEFAULT_ALLOC_SIZE (64 * 1024)
static gfarm_error_t
-set_xattr(int xmlMode, int nofollow, char *path, char *xattrname,
- char *filename, int flags)
+alloc_buf(const char *filename, char **bufp, size_t *szp)
{
const size_t count = 65536;
ssize_t sz;
size_t buf_sz, msg_sz = 0;
char *buf = NULL, *tbuf;
- gfarm_error_t e;
- int fd, need_close = 0, save_errno;
+ int fd, save_errno;
int overflow;
#ifdef __GNUC__ /* workaround gcc warning: might be used uninitialized */
tbuf = NULL;
#endif
-
if (filename != NULL) {
- fd = open(filename, O_RDONLY);
- need_close = 1;
+ if ((fd = open(filename, O_RDONLY)) == -1) {
+ save_errno = errno;
+ fprintf(stderr, "%s: %s\n", filename,
+ strerror(save_errno));
+ return (gfarm_errno_to_error(save_errno));
+ }
} else
fd = STDIN_FILENO;
- if (fd == -1) {
- save_errno = errno;
- if (filename != NULL)
- fprintf(stderr, "%s: %s\n", filename,
- strerror(save_errno));
- return (gfarm_errno_to_error(save_errno));
- }
buf_sz = count;
overflow = 0;
@@ -68,23 +62,59 @@
if (!overflow)
tbuf = realloc(buf, buf_sz);
if (overflow || (tbuf == NULL)) {
- e = GFARM_ERR_NO_MEMORY;
- goto free_buf;
+ free(buf);
+ return (GFARM_ERR_NO_MEMORY);
}
buf = tbuf;
}
buf[msg_sz] = '\0';
- if (need_close)
+ if (filename != NULL)
close(fd);
- if (xmlMode) {
+ if (bufp != NULL)
+ *bufp = buf;
+ if (szp != NULL)
+ *szp = msg_sz;
+ return (GFARM_ERR_NO_ERROR);
+}
+
+static gfarm_error_t
+set_xattr(int xmlMode, int nofollow, char *path, char *xattrname,
+ char *filename, int flags)
+{
+ size_t msg_sz;
+ char *buf;
+ gfarm_error_t e;
+
+ e = alloc_buf(filename, &buf, &msg_sz);
+ if (e != GFARM_ERR_NO_ERROR)
+ return (e);
+ if (xmlMode)
e = (nofollow ? gfs_lsetxmlattr : gfs_setxmlattr)
(path, xattrname, buf, msg_sz + 1, flags);
- } else {
+ else
e = (nofollow ? gfs_lsetxattr : gfs_setxattr)
(path, xattrname, buf, msg_sz, flags);
+ free(buf);
+ return (e);
+}
+
+static gfarm_error_t
+set_xattr_by_inode(gfarm_ino_t inum, gfarm_uint64_t gen,
+ char *xattrname, char *filename, int flags)
+{
+ size_t msg_sz;
+ char *buf;
+ gfarm_error_t e;
+ GFS_File gf;
+
+ if ((e = alloc_buf(filename, &buf, &msg_sz)) != GFARM_ERR_NO_ERROR)
+ return (e);
+ e = gfs_pio_fhopen(inum, gen, GFARM_FILE_RDONLY, &gf);
+ if (e == GFARM_ERR_NO_ERROR) {
+ e = gfs_fsetxattr(gf, xattrname, buf, msg_sz, flags);
+ gfs_pio_close(gf);
}
-free_buf:
free(buf);
return (e);
}
@@ -115,45 +145,90 @@
}
static gfarm_error_t
+get_fxattr_alloc(GFS_File gf, char *xattrname, void **valuep, size_t *size)
+{
+ gfarm_error_t e;
+ void *value;
+
+ value = malloc(*size);
+ if (value == NULL)
+ return (GFARM_ERR_NO_MEMORY);
+
+ e = gfs_fgetxattr(gf, xattrname, value, size);
+ if (e == GFARM_ERR_NO_ERROR)
+ *valuep = value;
+ else
+ free(value);
+ return (e);
+}
+
+static gfarm_error_t
+write_buf(const char *filename, void *value, size_t size)
+{
+ FILE *f;
+ int save_errno;
+ size_t wsize;
+
+ if (filename != NULL) {
+ f = fopen(filename, "w");
+ if (f == NULL) {
+ save_errno = errno;
+ fprintf(stderr, "%s: %s\n", filename,
+ strerror(save_errno));
+ return (gfarm_errno_to_error(save_errno));
+ }
+ } else
+ f = stdout;
+
+ wsize = fwrite(value, 1, size, f);
+ if (wsize != size)
+ perror("fwrite");
+ fflush(f);
+ if (filename != NULL)
+ fclose(f);
+ return (GFARM_ERR_NO_ERROR);
+}
+
+static gfarm_error_t
get_xattr(int xmlMode, int nofollow, char *path, char *xattrname,
char *filename)
{
gfarm_error_t e;
- FILE *f;
- int need_close = 0, save_errno;
void *value = NULL;
- size_t size, wsize;
+ size_t size;
size = DEFAULT_ALLOC_SIZE;
e = get_xattr_alloc(xmlMode, nofollow, path, xattrname, &value, &size);
- if (e == GFARM_ERR_RESULT_OUT_OF_RANGE) {
+ if (e == GFARM_ERR_RESULT_OUT_OF_RANGE)
e = get_xattr_alloc(xmlMode, nofollow, path, xattrname, &value,
&size);
- }
if (e != GFARM_ERR_NO_ERROR)
return (e);
- if (filename != NULL) {
- f = fopen(filename, "w");
- need_close = 1;
- } else
- f = stdout;
- if (f == NULL) {
- save_errno = errno;
- free(value);
- if (filename != NULL)
- fprintf(stderr, "%s: %s\n", filename,
- strerror(save_errno));
- return (gfarm_errno_to_error(save_errno));
- }
+ e = write_buf(filename, value, size);
+ free(value);
+ return (e);
+}
- wsize = fwrite(value, 1, size, f);
- if (wsize != size) {
- perror("fwrite");
- }
- fflush(f);
- if (need_close)
- fclose(f);
+static gfarm_error_t
+get_xattr_by_inode(gfarm_ino_t inum, gfarm_uint64_t gen,
+ char *xattrname, char *filename)
+{
+ GFS_File gf;
+ void *value;
+ size_t size = DEFAULT_ALLOC_SIZE;
+ gfarm_error_t e;
+
+ e = gfs_pio_fhopen(inum, gen, GFARM_FILE_RDONLY, &gf);
+ if (e != GFARM_ERR_NO_ERROR)
+ return (e);
+ e = get_fxattr_alloc(gf, xattrname, &value, &size);
+ if (e == GFARM_ERR_RESULT_OUT_OF_RANGE)
+ e = get_fxattr_alloc(gf, xattrname, &value, &size);
+ gfs_pio_close(gf);
+ if (e != GFARM_ERR_NO_ERROR)
+ return (e);
+ e = write_buf(filename, value, size);
free(value);
return (e);
}
@@ -174,6 +249,21 @@
}
static gfarm_error_t
+remove_xattr_by_inode(gfarm_ino_t inum, gfarm_uint64_t gen,
+ char *xattrname)
+{
+ gfarm_error_t e;
+ GFS_File gf;
+
+ e = gfs_pio_fhopen(inum, gen, GFARM_FILE_RDONLY, &gf);
+ if (e == GFARM_ERR_NO_ERROR) {
+ e = gfs_fremovexattr(gf, xattrname);
+ gfs_pio_close(gf);
+ }
+ return (e);
+}
+
+static gfarm_error_t
list_xattr_alloc(int xmlMode, int nofollow, char *path, char **listp,
size_t *size)
{
@@ -232,6 +322,12 @@
#endif
" [ -c | -m ]"
" [ -f xattrfile ] [ -h ] file [xattrname]\n", prog_name);
+ fprintf(stderr, " %s [ -s | -g | -r | -l ]"
+#ifdef ENABLE_XMLATTR
+ " [ -x ]"
+#endif
+ " [ -c | -m ] [ -G gen ]"
+ " [ -f xattrfile ] -I inum [xattrname]\n", prog_name);
fprintf(stderr, "\t-s\tset extended attribute\n");
fprintf(stderr, "\t-g\tget extended attribute\n");
fprintf(stderr, "\t-r\tremove extended attribute\n");
@@ -258,13 +354,19 @@
char *prog_name = basename(argv[0]);
char *filename = NULL, *c_path, *c_realpath = NULL, *xattrname = NULL;
enum { NONE, SET_MODE, GET_MODE, REMOVE_MODE, LIST_MODE } mode = NONE;
+ enum { REGULAR, INUM } file_mode = REGULAR;
int c, xmlMode = 0, nofollow = 0, flags = 0;
+ gfarm_ino_t inum = 0;
+ gfarm_uint64_t gen = 0;
gfarm_error_t e;
- const char *opts = "f:gsrlcmh?"
+ const char *opts = "f:G:gIsrlcmh?"
#ifdef ENABLE_XMLATTR
"x"
#endif
;
+#ifdef __GNUC__ /* workaround gcc warning: might be used uninitialized */
+ c_path = NULL;
+#endif
while ((c = getopt(argc, argv, opts)) != -1) {
switch (c) {
@@ -303,6 +405,12 @@
case 'h':
nofollow = 1;
break;
+ case 'G':
+ gen = atoll(optarg);
+ break;
+ case 'I':
+ file_mode = INUM;
+ break;
case '?':
default:
usage(prog_name);
@@ -320,36 +428,52 @@
exit(1);
}
- e = gfarm_realpath_by_gfarm2fs(argv[0], &c_realpath);
- if (e == GFARM_ERR_NO_ERROR)
- c_path = c_realpath;
- else
- c_path = argv[0];
- if (argc > 1) {
+ if (file_mode == REGULAR) {
+ e = gfarm_realpath_by_gfarm2fs(argv[0], &c_realpath);
+ if (e == GFARM_ERR_NO_ERROR)
+ c_path = c_realpath;
+ else
+ c_path = argv[0];
+ } else
+ inum = atoll(argv[0]);
+ if (argc > 1)
xattrname = argv[1];
- }
switch (mode) {
case SET_MODE:
if (argc != 2)
usage(prog_name);
- e = set_xattr(xmlMode, nofollow, c_path, xattrname, filename,
- flags);
+ if (file_mode == REGULAR)
+ e = set_xattr(xmlMode, nofollow, c_path, xattrname,
+ filename, flags);
+ else
+ e = set_xattr_by_inode(inum, gen, xattrname,
+ filename, flags);
break;
case GET_MODE:
if (argc != 2)
usage(prog_name);
- e = get_xattr(xmlMode, nofollow, c_path, xattrname, filename);
+ if (file_mode == REGULAR)
+ e = get_xattr(xmlMode, nofollow, c_path, xattrname,
+ filename);
+ else
+ e = get_xattr_by_inode(inum, gen, xattrname, filename);
break;
case REMOVE_MODE:
if (argc != 2)
usage(prog_name);
- e = remove_xattr(xmlMode, nofollow, c_path, xattrname);
+ if (file_mode == REGULAR)
+ e = remove_xattr(xmlMode, nofollow, c_path, xattrname);
+ else
+ e = remove_xattr_by_inode(inum, gen, xattrname);
break;
case LIST_MODE:
if (argc != 1)
usage(prog_name);
- e = list_xattr(xmlMode, nofollow, c_path);
+ if (file_mode == REGULAR)
+ e = list_xattr(xmlMode, nofollow, c_path);
+ else
+ e = GFARM_ERR_OPERATION_NOT_SUPPORTED;
break;
default:
usage(prog_name);
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