#define _TOOLS_UTIL_H
#include <errno.h>
+#include <mntent.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
+#include <linux/bug.h>
#include <linux/byteorder.h>
#include <linux/kernel.h>
#include <linux/log2.h>
#include <linux/string.h>
#include <linux/types.h>
+#include <linux/uuid.h>
+#include "libbcachefs/bcachefs.h"
+#include "libbcachefs/bbpos.h"
+#include "libbcachefs/darray.h"
+
+#define noreturn __attribute__((noreturn))
+
+void die(const char *, ...)
+ __attribute__ ((format (printf, 1, 2))) noreturn;
+char *mprintf(const char *, ...)
+ __attribute__ ((format (printf, 1, 2)));
+void xpread(int, void *, size_t, off_t);
+void xpwrite(int, const void *, size_t, off_t, const char *);
+struct stat xfstatat(int, const char *, int);
+struct stat xfstat(int);
+struct stat xstat(const char *);
-#define die(arg, ...) \
-do { \
- fprintf(stderr, arg "\n", ##__VA_ARGS__); \
- exit(EXIT_FAILURE); \
-} while (0)
+static inline void *xmalloc(size_t size)
+{
+ void *p = malloc(size);
+
+ if (!p)
+ die("insufficient memory");
+
+ memset(p, 0, size);
+ return p;
+}
static inline void *xcalloc(size_t count, size_t size)
{
return p;
}
-static inline void *xmalloc(size_t size)
+static inline void *xrealloc(void *p, size_t size)
{
- void *p = malloc(size);
-
+ p = realloc(p, size);
if (!p)
die("insufficient memory");
- memset(p, 0, size);
return p;
}
-static inline void xpread(int fd, void *buf, size_t count, off_t offset)
-{
- ssize_t r = pread(fd, buf, count, offset);
+#define xopenat(_dirfd, _path, ...) \
+({ \
+ int _fd = openat((_dirfd), (_path), __VA_ARGS__); \
+ if (_fd < 0) \
+ die("Error opening %s: %m", (_path)); \
+ _fd; \
+})
+
+#define xopen(...) xopenat(AT_FDCWD, __VA_ARGS__)
+
+#define xioctl(_fd, _nr, ...) \
+({ \
+ int _ret = ioctl((_fd), (_nr), ##__VA_ARGS__); \
+ if (_ret < 0) \
+ die(#_nr " ioctl error: %m"); \
+ _ret; \
+})
+
+void write_file_str(int, const char *, const char *);
+char *read_file_str(int, const char *);
+u64 read_file_u64(int, const char *);
+
+ssize_t read_string_list_or_die(const char *, const char * const[],
+ const char *);
+
+u64 get_size(int);
+unsigned get_blocksize(int);
+struct dev_opts;
+int open_for_format(struct dev_opts *, bool);
- if (r != count)
- die("read error (ret %zi)", r);
+bool ask_yn(void);
+
+struct range {
+ u64 start;
+ u64 end;
+};
+
+typedef DARRAY(struct range) ranges;
+
+static inline void range_add(ranges *data, u64 offset, u64 size)
+{
+ darray_push(data, ((struct range) {
+ .start = offset,
+ .end = offset + size
+ }));
}
-static inline void xpwrite(int fd, const void *buf, size_t count, off_t offset)
+void ranges_sort_merge(ranges *);
+void ranges_roundup(ranges *, unsigned);
+void ranges_rounddown(ranges *, unsigned);
+
+struct hole_iter {
+ ranges r;
+ size_t idx;
+ u64 end;
+};
+
+static inline struct range hole_iter_next(struct hole_iter *iter)
{
- ssize_t r = pwrite(fd, buf, count, offset);
+ struct range r = {
+ .start = iter->idx ? iter->r.data[iter->idx - 1].end : 0,
+ .end = iter->idx < iter->r.nr
+ ? iter->r.data[iter->idx].start : iter->end,
+ };
- if (r != count)
- die("write error (ret %zi err %s)", r, strerror(errno));
+ BUG_ON(r.start > r.end);
+
+ iter->idx++;
+ return r;
}
-enum units {
- BYTES,
- SECTORS,
- HUMAN_READABLE,
-};
+#define for_each_hole(_iter, _ranges, _end, _i) \
+ for (_iter = (struct hole_iter) { .r = _ranges, .end = _end }; \
+ (_iter.idx <= _iter.r.nr && \
+ (_i = hole_iter_next(&_iter), true));)
-struct units_buf __pr_units(u64, enum units);
+#include <linux/fiemap.h>
-struct units_buf {
- char b[20];
+struct fiemap_iter {
+ struct fiemap *f;
+ unsigned idx;
+ int fd;
};
-#define pr_units(_v, _u) __pr_units(_v, _u).b
+static inline void fiemap_iter_init(struct fiemap_iter *iter, int fd)
+{
+ memset(iter, 0, sizeof(*iter));
-char *read_file_str(int, const char *);
-u64 read_file_u64(int, const char *);
+ iter->f = xmalloc(sizeof(struct fiemap) +
+ sizeof(struct fiemap_extent) * 1024);
-ssize_t read_string_list_or_die(const char *, const char * const[],
- const char *);
+ iter->f->fm_extent_count = 1024;
+ iter->f->fm_length = FIEMAP_MAX_OFFSET;
+ iter->fd = fd;
+}
-u64 get_size(const char *, int);
-unsigned get_blocksize(const char *, int);
+static inline void fiemap_iter_exit(struct fiemap_iter *iter)
+{
+ free(iter->f);
+ memset(iter, 0, sizeof(*iter));
+}
-int bcachectl_open(void);
+struct fiemap_extent fiemap_iter_next(struct fiemap_iter *);
-struct bcache_handle {
- int ioctl_fd;
- int sysfs_fd;
-};
+#define fiemap_for_each(fd, iter, extent) \
+ for (fiemap_iter_init(&iter, fd); \
+ (extent = fiemap_iter_next(&iter)).fe_length;)
-struct bcache_handle bcache_fs_open(const char *);
+char *strcmp_prefix(char *, const char *);
-bool ask_yn(void);
+u32 crc32c(u32, const void *, size_t);
+
+char *dev_to_name(dev_t);
+char *dev_to_path(dev_t);
+struct mntent *dev_to_mount(char *);
+int dev_mounted(char *);
+
+#define args_shift(_nr) \
+do { \
+ unsigned _n = min((_nr), argc); \
+ argc -= _n; \
+ argv += _n; \
+} while (0)
+
+#define arg_pop() \
+({ \
+ char *_ret = argc ? argv[0] : NULL; \
+ if (_ret) \
+ args_shift(1); \
+ _ret; \
+})
+
+struct bpos bpos_parse(char *);
+struct bbpos bbpos_parse(char *);
+
+darray_str get_or_split_cmdline_devs(int argc, char *argv[]);
#endif /* _TOOLS_UTIL_H */
projects / bcachefs-tools-debian / blobdiff