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add disk ioctl

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This commit is contained in:
Chris Mason 2007-04-12 10:51:51 -04:00 committed by David Woodhouse
parent d23ea8706c
commit 98baacc623
2 changed files with 18 additions and 1 deletions
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17
btrfsctl.c
View File

@ -15,6 +15,7 @@
#ifdef __CHECKER__
#define BLKGETSIZE64 0
#define BTRFS_IOC_SNAP_CREATE 0
#define BTRFS_IOC_ADD_DISK 0
#define BTRFS_VOL_NAME_MAX 255
struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
static inline int ioctl(int fd, int define, void *arg) { return 0; }
@ -36,6 +37,7 @@ int main(int ac, char **av)
int i;
struct stat st;
DIR *dirstream;
unsigned long command;
for (i = 1; i < ac - 1; i++) {
if (strcmp(av[i], "-s") == 0) {
@ -48,6 +50,19 @@ int main(int ac, char **av)
fprintf(stderr, "snapshot name is too long\n");
exit(1);
}
command = BTRFS_IOC_SNAP_CREATE;
}
if (strcmp(av[i], "-a") == 0) {
if (i + 1 >= ac - 1) {
fprintf(stderr, "-a requires an arg");
print_usage();
}
name = av[i + 1];
if (strlen(name) >= BTRFS_VOL_NAME_MAX) {
fprintf(stderr, "device name is too long\n");
exit(1);
}
command = BTRFS_IOC_ADD_DISK;
}
}
fname = av[ac - 1];
@ -71,7 +86,7 @@ printf("fname is %s\n", fname);
exit(1);
}
strcpy(args.name, name);
ret = ioctl(fd, BTRFS_IOC_SNAP_CREATE, &args);
ret = ioctl(fd, command, &args);
printf("ioctl returns %d\n", ret);
return 0;
}

2
ioctl.h
View File

@ -10,4 +10,6 @@ struct btrfs_ioctl_vol_args {
#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_ADD_DISK _IOW(BTRFS_IOCTL_MAGIC, 2, \
struct btrfs_ioctl_vol_args)
#endif