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Implement argp support for listxaddr-hidden

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Rename to list-hidden-xaddrs.

Signed-off-by: Andy Grover <agrover@versity.com>
This commit is contained in:
Andy Grover
2020-12-02 11:39:28 -08:00
parent 706fe9a30e
commit d025122fdd
1 changed files with 52 additions and 35 deletions
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87
utils/src/listxattr_hidden.c
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@@ -7,56 +7,31 @@
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <getopt.h>
#include <ctype.h>
#include <argp.h>
#include "sparse.h"
#include "parse.h"
#include "util.h"
#include "format.h"
#include "ioctl.h"
#include "cmd.h"
static struct option long_ops[] = {
{ "file", 1, NULL, 'f' },
{ NULL, 0, NULL, 0}
struct list_hidden_xattr_args {
char *filename;
};
static int listxattr_hidden_cmd(int argc, char **argv)
static int do_list_hidden_xattrs(struct list_hidden_xattr_args *args)
{
struct scoutfs_ioctl_listxattr_hidden lxh;
char *path = NULL;
char *buf = NULL;
char *name;
int fd = -1;
int bytes;
int len;
int ret;
int c;
int i;
while ((c = getopt_long(argc, argv, "f:", long_ops, NULL)) != -1) {
switch (c) {
case 'f':
path = strdup(optarg);
if (!path) {
fprintf(stderr, "path mem alloc failed\n");
ret = -ENOMEM;
goto out;
}
break;
case '?':
default:
ret = -EINVAL;
goto out;
}
}
if (path == NULL) {
fprintf(stderr, "must specify -f path to file\n");
ret = -EINVAL;
goto out;
}
memset(&lxh, 0, sizeof(lxh));
lxh.id_pos = 0;
lxh.hash_pos = 0;
@@ -69,11 +44,11 @@ static int listxattr_hidden_cmd(int argc, char **argv)
}
lxh.buf_ptr = (unsigned long)buf;
fd = open(path, O_RDONLY);
fd = open(args->filename, O_RDONLY);
if (fd < 0) {
ret = -errno;
fprintf(stderr, "failed to open '%s': %s (%d)\n",
path, strerror(errno), errno);
args->filename, strerror(errno), errno);
goto out;
}
@@ -139,9 +114,51 @@ out:
return ret;
};
static int parse_opt(int key, char *arg, struct argp_state *state)
{
struct list_hidden_xattr_args *args = state->input;
switch (key) {
case ARGP_KEY_ARG:
if (args->filename)
argp_error(state, "more than one filename argument given");
args->filename = strdup_or_error(state, arg);
break;
case ARGP_KEY_FINI:
if (!args->filename) {
argp_error(state, "must specify filename");
}
break;
default:
break;
}
return 0;
}
static int list_hidden_xattrs_cmd(int argc, char **argv)
{
struct argp argp = {
NULL,
parse_opt,
"FILE",
"Print the names of hidden xattrs on a file"
};
struct list_hidden_xattr_args list_hidden_xattr_args = {NULL};
int ret;
ret = argp_parse(&argp, argc, argv, 0, NULL, &list_hidden_xattr_args);
if (ret)
return ret;
return do_list_hidden_xattrs(&list_hidden_xattr_args);
}
static void __attribute__((constructor)) listxattr_hidden_ctor(void)
{
cmd_register("listxattr-hidden", "-f <path>",
"print the names of hidden xattrs on the file",
listxattr_hidden_cmd);
cmd_register("list-hidden-xattrs", "<path>",
"print the names of hidden xattrs on a file",
list_hidden_xattrs_cmd);
}