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fsstress: add operation for reading xattrs from files and directories

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The previous patch added support for an operation to set xattrs on regular
files and directories, this patch just adds one operation to read (get)
them.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
This commit is contained in:
Filipe Manana
2019-04-19 11:54:22 +01:00
committed by Eryu Guan
parent fc4b0a55b9
commit e9ffa8daec
1 changed files with 73 additions and 0 deletions
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ltp/fsstress.c
+73
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@@ -69,6 +69,7 @@ typedef enum {
OP_FSYNC,
OP_GETATTR,
OP_GETDENTS,
OP_GETFATTR,
OP_LINK,
OP_MKDIR,
OP_MKNOD,
@@ -184,6 +185,7 @@ void fsync_f(int, long);
char *gen_random_string(int);
void getattr_f(int, long);
void getdents_f(int, long);
void getfattr_f(int, long);
void link_f(int, long);
void mkdir_f(int, long);
void mknod_f(int, long);
@@ -237,6 +239,8 @@ opdesc_t ops[] = {
{ OP_FSYNC, "fsync", fsync_f, 1, 1 },
{ OP_GETATTR, "getattr", getattr_f, 1, 0 },
{ OP_GETDENTS, "getdents", getdents_f, 1, 0 },
/* get extended attribute */
{ OP_GETFATTR, "getfattr", getfattr_f, 1, 0 },
{ OP_LINK, "link", link_f, 1, 1 },
{ OP_MKDIR, "mkdir", mkdir_f, 2, 1 },
{ OP_MKNOD, "mknod", mknod_f, 2, 1 },
@@ -3593,6 +3597,75 @@ getdents_f(int opno, long r)
closedir(dir);
}
void
getfattr_f(int opno, long r)
{
fent_t *fep;
int e;
pathname_t f;
int v;
char name[XATTR_NAME_BUF_SIZE];
char *value = NULL;
int value_len;
int xattr_num;
init_pathname(&f);
if (!get_fname(FT_REGFILE | FT_DIRm, r, &f, NULL, &fep, &v)) {
if (v)
printf("%d/%d: getfattr - no filename\n", procid, opno);
goto out;
}
check_cwd();
/*
* If the file/dir has xattrs, pick one randomly, otherwise attempt
* to read a xattr that doesn't exist (fgetxattr should fail with
* errno set to ENOATTR (61) in this case).
*/
if (fep->xattr_counter > 0)
xattr_num = (random() % fep->xattr_counter) + 1;
else
xattr_num = 0;
e = generate_xattr_name(xattr_num, name, sizeof(name));
if (e < 0) {
printf("%d/%d: getfattr - file %s failed to generate xattr name: %d\n",
procid, opno, f.path, e);
goto out;
}
value_len = getxattr(f.path, name, NULL, 0);
if (value_len < 0) {
if (v)
printf("%d/%d: getfattr file %s name %s failed %d\n",
procid, opno, f.path, name, errno);
goto out;
}
/* A xattr without value.*/
if (value_len == 0) {
e = 0;
goto out_log;
}
value = malloc(value_len);
if (!value) {
if (v)
printf("%d/%d: getfattr file %s failed to allocate buffer with %d bytes\n",
procid, opno, f.path, value_len);
goto out;
}
e = getxattr(f.path, name, value, value_len) < 0 ? errno : 0;
out_log:
if (v)
printf("%d/%d: getfattr file %s name %s value length %d %d\n",
procid, opno, f.path, name, value_len, e);
out:
free(value);
free_pathname(&f);
}
void
link_f(int opno, long r)
{