mirror of
https://github.com/versity/scoutfs.git
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8597fd0bfc
Use natuturally aligned and explicitly padded ioctl structs. Signed-off-by: Zach Brown <zab@versity.com>
113 lines
2.2 KiB
C
113 lines
2.2 KiB
C
#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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#include <getopt.h>
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#include <assert.h>
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#include "sparse.h"
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#include "util.h"
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#include "format.h"
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#include "ioctl.h"
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#include "parse.h"
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#include "cmd.h"
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static struct option long_ops[] = {
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{ "ctime", 1, NULL, 'c' },
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{ "data_version", 1, NULL, 'd' },
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{ "file", 1, NULL, 'f' },
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{ "offline", 0, NULL, 'o' },
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{ "i_size", 1, NULL, 's' },
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{ NULL, 0, NULL, 0}
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};
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static int setattr_more_cmd(int argc, char **argv)
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{
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struct scoutfs_ioctl_setattr_more sm;
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struct timespec ctime;
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char *path = NULL;
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int ret;
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int fd = -1;
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int c;
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memset(&sm, 0, sizeof(sm));
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while ((c = getopt_long(argc, argv, "c:d:f:os:", long_ops, NULL)) != -1) {
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switch (c) {
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case 'c':
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ret = parse_timespec(optarg, &ctime);
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if (ret)
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goto out;
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break;
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case 'd':
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ret = parse_u64(optarg, &sm.data_version);
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if (ret)
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goto out;
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break;
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case 'f':
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path = strdup(optarg);
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if (!path) {
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fprintf(stderr, "path mem alloc failed\n");
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ret = -ENOMEM;
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goto out;
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}
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break;
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case 'o':
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sm.flags |= SCOUTFS_IOC_SETATTR_MORE_OFFLINE;
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break;
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case 's':
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ret = parse_u64(optarg, &sm.i_size);
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if (ret)
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goto out;
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break;
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case '?':
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default:
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ret = -EINVAL;
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goto out;
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}
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}
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if (path == NULL) {
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fprintf(stderr, "must specify -f path to file\n");
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ret = -EINVAL;
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goto out;
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}
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fd = open(path, O_WRONLY);
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if (fd < 0) {
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ret = -errno;
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fprintf(stderr, "failed to open '%s': %s (%d)\n",
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path, strerror(errno), errno);
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goto out;
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}
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sm.ctime_sec = ctime.tv_sec;
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sm.ctime_nsec = ctime.tv_nsec;
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ret = ioctl(fd, SCOUTFS_IOC_SETATTR_MORE, &sm);
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if (ret < 0) {
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ret = -errno;
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fprintf(stderr, "setattr_more ioctl failed on '%s': "
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"%s (%d)\n", path, strerror(errno), errno);
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goto out;
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}
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ret = 0;
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out:
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if (fd >= 0)
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close(fd);
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return ret;
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}
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static void __attribute__((constructor)) setattr_more_ctor(void)
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{
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cmd_register("setattr", "-c ctime -d data_version -o -s i_size -f <path>",
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"set attributes on file with no data",
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setattr_more_cmd);
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}
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