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#ifndef _TOOLS_UTIL_H
#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 *xcalloc(size_t, size_t);
void *xmalloc(size_t);
void *xrealloc(void *, size_t);
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 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);
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
}));
}
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)
{
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,
};
BUG_ON(r.start > r.end);
iter->idx++;
return r;
}
#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));)
#include <linux/fiemap.h>
struct fiemap_iter {
struct fiemap *f;
unsigned idx;
int fd;
};
static inline void fiemap_iter_init(struct fiemap_iter *iter, int fd)
{
memset(iter, 0, sizeof(*iter));
iter->f = xmalloc(sizeof(struct fiemap) +
sizeof(struct fiemap_extent) * 1024);
iter->f->fm_extent_count = 1024;
iter->f->fm_length = FIEMAP_MAX_OFFSET;
iter->fd = fd;
}
static inline void fiemap_iter_exit(struct fiemap_iter *iter)
{
free(iter->f);
memset(iter, 0, sizeof(*iter));
}
struct fiemap_extent fiemap_iter_next(struct fiemap_iter *);
#define fiemap_for_each(fd, iter, extent) \
for (fiemap_iter_init(&iter, fd); \
(extent = fiemap_iter_next(&iter)).fe_length;)
char *strcmp_prefix(char *, const char *);
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 *);
#endif /* _TOOLS_UTIL_H */
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