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-rw-r--r--contrib/ext4-ioc.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/contrib/ext4-ioc.c b/contrib/ext4-ioc.c
new file mode 100644
index 0000000..42f022d
--- /dev/null
+++ b/contrib/ext4-ioc.c
@@ -0,0 +1,98 @@
+/*
+ * Test program to trigger various ext4 ioctl's
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+#if (!defined(EXT4_IOC_ALLOC_DA_BLKS) && defined(__linux__))
+#define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 12)
+#endif
+
+#if (!defined(EXT4_IOC_SWAP_BOOT) && defined(__linux__))
+#define EXT4_IOC_SWAP_BOOT _IO('f', 17)
+#endif
+
+#if (!defined(EXT4_IOC_PRECACHE_EXTENTS) && defined(__linux__))
+#define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18)
+#endif
+
+#if (!defined(EXT4_IOC_CLEAR_ES_CACHE) && defined(__linux__))
+#define EXT4_IOC_CLEAR_ES_CACHE _IO('f', 40)
+#endif
+
+
+#define EXT4_F_RW 0x0001
+
+struct cmd {
+ const char *cmd;
+ unsigned long ioc;
+ int flags;
+};
+
+struct cmd cmds[] = {
+ { "alloc_da_blks", EXT4_IOC_ALLOC_DA_BLKS, EXT4_F_RW },
+ { "precache", EXT4_IOC_PRECACHE_EXTENTS, 0 },
+ { "swap_boot", EXT4_IOC_SWAP_BOOT, EXT4_F_RW },
+ { "clear_es_cache", EXT4_IOC_CLEAR_ES_CACHE, EXT4_F_RW },
+ { NULL, 0 }
+};
+
+const char *progname;
+
+void usage()
+{
+ struct cmd *p;
+
+ fprintf(stderr, "Usage: %s <cmd> <file>\n\n", progname);
+ fprintf(stderr, "Available commands:\n");
+ for (p = cmds; p->cmd; p++) {
+ fprintf(stderr, "\t%s\n", p->cmd);
+ }
+ exit(1);
+}
+
+int do_single_cmd(const char *fn, struct cmd *p)
+{
+ int fd;
+ int oflags = O_RDONLY;
+
+ if (p->flags & EXT4_F_RW)
+ oflags = O_RDWR;
+ fd = open(fn, oflags, 0);
+ if (fd < 0) {
+ perror("open");
+ return 1;
+ }
+ if (ioctl(fd, p->ioc) < 0) {
+ perror("ioctl");
+ return 1;
+ }
+ close(fd);
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ int i, fails = 0;
+ struct cmd *p;
+
+ progname = argv[0];
+ if (argc < 3 || strcmp(argv[1], "help") == 0)
+ usage();
+ for (p = cmds; p->cmd; p++) {
+ if (strcmp(argv[1], p->cmd) == 0)
+ break;
+ }
+ if (p->cmd == NULL) {
+ fprintf(stderr, "Invalid command: %s\n", argv[1]);
+ usage();
+ }
+ for (i = 2; i < argc; i++)
+ fails += do_single_cmd(argv[i], p);
+ return fails;
+}