include/path.h

   1 #ifndef UTIL_LINUX_PATH_H
   2 #define UTIL_LINUX_PATH_H
   3
   4 #include <stdio.h>
   5 #include <stdint.h>
   6 #include <stdint.h>
   7 #include <sys/types.h>
   8 #include <dirent.h>
   9
  10 #include "c.h"
  11
  12 struct path_cxt {
  13         int     dir_fd;
  14         char    *dir_path;
  15
  16         int     refcount;
  17
  18         char *prefix;
  19         char path_buffer[PATH_MAX];
  20
  21         void    *dialect;
  22         void    (*free_dialect)(struct path_cxt *);
  23         int     (*redirect_on_enoent)(struct path_cxt *, const char *, int *);
  24 };
  25
  26 struct path_cxt *ul_new_path(const char *dir, ...);
  27 void ul_unref_path(struct path_cxt *pc);
  28 void ul_ref_path(struct path_cxt *pc);
  29
  30 void ul_path_init_debug(void);
  31
  32 int ul_path_set_prefix(struct path_cxt *pc, const char *prefix);
  33 const char *ul_path_get_prefix(struct path_cxt *pc);
  34
  35 int ul_path_set_dir(struct path_cxt *pc, const char *dir);
  36 const char *ul_path_get_dir(struct path_cxt *pc);
  37
  38 int ul_path_set_dialect(struct path_cxt *pc, void *data, void free_data(struct path_cxt *));
  39 void *ul_path_get_dialect(struct path_cxt *pc);
  40
  41 int ul_path_set_enoent_redirect(struct path_cxt *pc, int (*func)(struct path_cxt *, const char *, int *));
  42 int ul_path_get_dirfd(struct path_cxt *pc);
  43 void ul_path_close_dirfd(struct path_cxt *pc);
  44 int ul_path_isopen_dirfd(struct path_cxt *pc);
  45
  46 char *ul_path_get_abspath(struct path_cxt *pc, char *buf, size_t bufsz, const char *path, ...)
  47                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  48
  49 int ul_path_access(struct path_cxt *pc, int mode, const char *path);
  50 int ul_path_accessf(struct path_cxt *pc, int mode, const char *path, ...)
  51                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  52
  53 int ul_path_open(struct path_cxt *pc, int flags, const char *path);
  54 int ul_path_openf(struct path_cxt *pc, int flags, const char *path, ...)
  55                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  56 int ul_path_vopenf(struct path_cxt *pc, int flags, const char *path, va_list ap);
  57
  58 FILE *ul_path_fopen(struct path_cxt *pc, const char *mode, const char *path);
  59 FILE *ul_path_fopenf(struct path_cxt *pc, const char *mode, const char *path, ...)
  60                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  61 FILE *ul_path_vfopenf(struct path_cxt *pc, const char *mode, const char *path, va_list ap);
  62
  63 DIR *ul_path_opendir(struct path_cxt *pc, const char *path);
  64 DIR *ul_path_vopendirf(struct path_cxt *pc, const char *path, va_list ap);
  65 DIR *ul_path_opendirf(struct path_cxt *pc, const char *path, ...)
  66                                 __attribute__ ((__format__ (__printf__, 2, 3)));
  67
  68 ssize_t ul_path_readlink(struct path_cxt *pc, char *buf, size_t bufsiz, const char *path);
  69 ssize_t ul_path_readlinkf(struct path_cxt *pc, char *buf, size_t bufsiz, const char *path, ...)
  70                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  71
  72 int ul_path_read(struct path_cxt *pc, char *buf, size_t len, const char *path);
  73 int ul_path_vreadf(struct path_cxt *pc, char *buf, size_t len, const char *path, va_list ap);
  74 int ul_path_readf(struct path_cxt *pc, char *buf, size_t len, const char *path, ...)
  75                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  76
  77 int ul_path_read_string(struct path_cxt *pc, char **str, const char *path);
  78 int ul_path_readf_string(struct path_cxt *pc, char **str, const char *path, ...)
  79                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  80
  81 int ul_path_read_buffer(struct path_cxt *pc, char *buf, size_t bufsz, const char *path);
  82 int ul_path_readf_buffer(struct path_cxt *pc, char *buf, size_t bufsz, const char *path, ...)
  83                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  84
  85 int ul_path_scanf(struct path_cxt *pc, const char *path, const char *fmt, ...);
  86 int ul_path_scanff(struct path_cxt *pc, const char *path, va_list ap, const char *fmt, ...)
  87                                 __attribute__ ((__format__ (__scanf__, 4, 5)));
  88
  89 int ul_path_read_majmin(struct path_cxt *pc, dev_t *res, const char *path);
  90 int ul_path_readf_majmin(struct path_cxt *pc, dev_t *res, const char *path, ...)
  91                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  92
  93 int ul_path_read_u32(struct path_cxt *pc, uint32_t *res, const char *path);
  94 int ul_path_readf_u32(struct path_cxt *pc, uint32_t *res, const char *path, ...)
  95                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  96
  97 int ul_path_read_s32(struct path_cxt *pc, int32_t *res, const char *path);
  98 int ul_path_readf_s32(struct path_cxt *pc, int32_t *res, const char *path, ...)
  99                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 100
 101 int ul_path_read_u64(struct path_cxt *pc, uint64_t *res, const char *path);
 102 int ul_path_readf_u64(struct path_cxt *pc, uint64_t *res, const char *path, ...)
 103                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 104
 105 int ul_path_read_s64(struct path_cxt *pc, int64_t *res, const char *path);
 106 int ul_path_readf_s64(struct path_cxt *pc, int64_t *res, const char *path, ...)
 107                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 108
 109 int ul_path_write_string(struct path_cxt *pc, const char *str, const char *path);
 110 int ul_path_writef_string(struct path_cxt *pc, const char *str, const char *path, ...)
 111                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 112
 113 int ul_path_write_s64(struct path_cxt *pc, int64_t num, const char *path);
 114 int ul_path_write_u64(struct path_cxt *pc, uint64_t num, const char *path);
 115 int ul_path_writef_u64(struct path_cxt *pc, uint64_t num, const char *path, ...)
 116                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 117
 118 int ul_path_count_dirents(struct path_cxt *pc, const char *path);
 119 int ul_path_countf_dirents(struct path_cxt *pc, const char *path, ...)
 120                                 __attribute__ ((__format__ (__printf__, 2, 3)));
 121
 122 FILE *ul_prefix_fopen(const char *prefix, const char *path, const char *mode);
 123
 124
 125 #ifdef HAVE_CPU_SET_T
 126 # include "cpuset.h"
 127 int ul_path_readf_cpuset(struct path_cxt *pc, cpu_set_t **set, int maxcpus, const char *path, ...)
 128                                 __attribute__ ((__format__ (__printf__, 4, 5)));
 129
 130 int ul_path_readf_cpulist(struct path_cxt *pc, cpu_set_t **set, int maxcpus, const char *path, ...)
 131                                 __attribute__ ((__format__ (__printf__, 4, 5)));
 132 #endif /* HAVE_CPU_SET_T */
 133 #endif /* UTIL_LINUX_PATH_H */