--- /dev/null
+/*
+ * f2fs_io.c - f2fs ioctl utility
+ *
+ * Author: Jaegeuk Kim <jaegeuk@kernel.org>
+ *
+ * Copied portion of the code from ../f2fscrypt.c
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include <termios.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "f2fs_io.h"
+
+struct cmd_desc {
+ const char *cmd_name;
+ void (*cmd_func)(int, char **, const struct cmd_desc *);
+ const char *cmd_desc;
+ const char *cmd_help;
+ int cmd_flags;
+};
+
+#define shutdown_desc "shutdown filesystem"
+#define shutdown_help \
+"f2fs_io shutdown [level] [dir]\n\n" \
+"Freeze and stop all IOs given mount point\n" \
+"level can be\n" \
+" 0 : going down with full sync\n" \
+" 1 : going down with checkpoint only\n" \
+" 2 : going down with no sync\n" \
+" 3 : going down with metadata flush\n" \
+" 4 : going down with fsck mark\n"
+
+static void do_shutdown(int argc, char **argv, const struct cmd_desc *cmd)
+{
+ u32 flag;
+ int ret, fd;
+
+ if (argc != 3) {
+ fputs("Excess arguments\n\n", stderr);
+ fputs(cmd->cmd_help, stderr);
+ exit(1);
+ }
+
+ flag = atoi(argv[1]);
+ if (flag >= F2FS_GOING_DOWN_MAX) {
+ fputs("Wrong level\n\n", stderr);
+ fputs(cmd->cmd_help, stderr);
+ exit(1);
+ }
+ fd = open(argv[2], O_RDONLY);
+ if (fd == -1) {
+ fputs("Open failed\n\n", stderr);
+ fputs(cmd->cmd_help, stderr);
+ exit(1);
+ }
+
+ ret = ioctl(fd, F2FS_IOC_SHUTDOWN, &flag);
+ if (ret < 0) {
+ perror("F2FS_IOC_SHUTDOWN");
+ exit(1);
+ }
+ printf("Shutdown %s with level=%d\n", argv[2], flag);
+ exit(0);
+}
+
+#define CMD_HIDDEN 0x0001
+#define CMD(name) { #name, do_##name, name##_desc, name##_help, 0 }
+#define _CMD(name) { #name, do_##name, NULL, NULL, CMD_HIDDEN }
+
+static void do_help(int argc, char **argv, const struct cmd_desc *cmd);
+const struct cmd_desc cmd_list[] = {
+ _CMD(help),
+ CMD(shutdown),
+ { NULL, NULL, NULL, NULL, 0 }
+};
+
+static void do_help(int argc, char **argv, const struct cmd_desc *UNUSED(cmd))
+{
+ const struct cmd_desc *p;
+
+ if (argc > 1) {
+ for (p = cmd_list; p->cmd_name; p++) {
+ if (p->cmd_flags & CMD_HIDDEN)
+ continue;
+ if (strcmp(p->cmd_name, argv[1]) == 0) {
+ putc('\n', stdout);
+ fputs("USAGE:\n ", stdout);
+ fputs(p->cmd_help, stdout);
+ exit(0);
+ }
+ }
+ printf("Unknown command: %s\n\n", argv[1]);
+ }
+
+ fputs("Available commands:\n", stdout);
+ for (p = cmd_list; p->cmd_name; p++) {
+ if (p->cmd_flags & CMD_HIDDEN)
+ continue;
+ printf(" %-20s %s\n", p->cmd_name, p->cmd_desc);
+ }
+ printf("\nTo get more information on a command, "
+ "type 'f2fs_io help cmd'\n");
+ exit(0);
+}
+
+static void die_signal_handler(int UNUSED(signum), siginfo_t *UNUSED(siginfo),
+ void *UNUSED(context))
+{
+ exit(-1);
+}
+
+static void sigcatcher_setup(void)
+{
+ struct sigaction sa;
+
+ memset(&sa, 0, sizeof(struct sigaction));
+ sa.sa_sigaction = die_signal_handler;
+ sa.sa_flags = SA_SIGINFO;
+
+ sigaction(SIGHUP, &sa, 0);
+ sigaction(SIGINT, &sa, 0);
+ sigaction(SIGQUIT, &sa, 0);
+ sigaction(SIGFPE, &sa, 0);
+ sigaction(SIGILL, &sa, 0);
+ sigaction(SIGBUS, &sa, 0);
+ sigaction(SIGSEGV, &sa, 0);
+ sigaction(SIGABRT, &sa, 0);
+ sigaction(SIGPIPE, &sa, 0);
+ sigaction(SIGALRM, &sa, 0);
+ sigaction(SIGTERM, &sa, 0);
+ sigaction(SIGUSR1, &sa, 0);
+ sigaction(SIGUSR2, &sa, 0);
+ sigaction(SIGPOLL, &sa, 0);
+ sigaction(SIGPROF, &sa, 0);
+ sigaction(SIGSYS, &sa, 0);
+ sigaction(SIGTRAP, &sa, 0);
+ sigaction(SIGVTALRM, &sa, 0);
+ sigaction(SIGXCPU, &sa, 0);
+ sigaction(SIGXFSZ, &sa, 0);
+}
+
+int main(int argc, char **argv)
+{
+ const struct cmd_desc *cmd;
+
+ if (argc < 2)
+ do_help(argc, argv, cmd_list);
+
+ sigcatcher_setup();
+ for (cmd = cmd_list; cmd->cmd_name; cmd++) {
+ if (strcmp(cmd->cmd_name, argv[1]) == 0) {
+ cmd->cmd_func(argc - 1, argv + 1, cmd);
+ exit(0);
+ }
+ }
+ printf("Unknown command: %s\n\n", argv[1]);
+ do_help(1, argv, cmd_list);
+ return 0;
+}
--- /dev/null
+/*
+ * ioctl.h - f2fs ioctl header
+ *
+ * Authors: Jaegeuk Kim <jaegeuk@kernel.org>
+ */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+#ifdef HAVE_LINUX_TYPES_H
+#include <linux/types.h>
+#endif
+#include <sys/types.h>
+
+#ifdef UNUSED
+#elif defined(__GNUC__)
+# define UNUSED(x) UNUSED_ ## x __attribute__((unused))
+#elif defined(__LCLINT__)
+# define UNUSED(x) x
+#else
+# define UNUSED(x) x
+#endif
+
+typedef u_int64_t u64;
+typedef u_int32_t u32;
+typedef u_int16_t u16;
+typedef u_int8_t u8;
+
+#ifndef HAVE_LINUX_TYPES_H
+typedef u8 __u8;
+typedef u16 __u16;
+typedef u32 __u32;
+typedef u16 __le16;
+typedef u32 __le32;
+typedef u16 __be16;
+typedef u32 __be32;
+#endif
+
+#define F2FS_IOCTL_MAGIC 0xf5
+#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
+#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
+#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
+#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
+#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
+#define F2FS_IOC_GARBAGE_COLLECT _IOW(F2FS_IOCTL_MAGIC, 6, __u32)
+#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
+#define F2FS_IOC_DEFRAGMENT _IOWR(F2FS_IOCTL_MAGIC, 8, \
+ struct f2fs_defragment)
+#define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
+ struct f2fs_move_range)
+#define F2FS_IOC_FLUSH_DEVICE _IOW(F2FS_IOCTL_MAGIC, 10, \
+ struct f2fs_flush_device)
+#define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \
+ struct f2fs_gc_range)
+#define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32)
+#define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
+#define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
+#define F2FS_IOC_PRECACHE_EXTENTS _IO(F2FS_IOCTL_MAGIC, 15)
+
+#define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
+#define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
+#define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
+
+/*
+ * should be same as XFS_IOC_GOINGDOWN.
+ * Flags for going down operation used by FS_IOC_GOINGDOWN
+ */
+#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
+#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
+#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
+#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
+#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
+#define F2FS_GOING_DOWN_NEED_FSCK 0x4 /* going down to trigger fsck */
+#define F2FS_GOING_DOWN_MAX 0x5
+
+#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
+/*
+ * ioctl commands in 32 bit emulation
+ */
+#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
+#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
+#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
+#endif
+
+#define F2FS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
+#define F2FS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
+
+struct f2fs_gc_range {
+ u32 sync;
+ u64 start;
+ u64 len;
+};
+
+struct f2fs_defragment {
+ u64 start;
+ u64 len;
+};
+
+struct f2fs_move_range {
+ u32 dst_fd; /* destination fd */
+ u64 pos_in; /* start position in src_fd */
+ u64 pos_out; /* start position in dst_fd */
+ u64 len; /* size to move */
+};
+
+struct f2fs_flush_device {
+ u32 dev_num; /* device number to flush */
+ u32 segments; /* # of segments to flush */
+};
projects / platform / upstream / f2fs-tools.git / commitdiff