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
  44 char *ul_path_get_abspath(struct path_cxt *pc, char *buf, size_t bufsz, const char *path, ...)
  45                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  46
  47 int ul_path_access(struct path_cxt *pc, int mode, const char *path);
  48 int ul_path_accessf(struct path_cxt *pc, int mode, const char *path, ...)
  49                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  50
  51 int ul_path_open(struct path_cxt *pc, int flags, const char *path);
  52 int ul_path_openf(struct path_cxt *pc, int flags, const char *path, ...)
  53                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  54 int ul_path_vopenf(struct path_cxt *pc, int flags, const char *path, va_list ap);
  55
  56 FILE *ul_path_fopen(struct path_cxt *pc, const char *mode, const char *path);
  57 FILE *ul_path_fopenf(struct path_cxt *pc, const char *mode, const char *path, ...)
  58                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  59 FILE *ul_path_vfopenf(struct path_cxt *pc, const char *mode, const char *path, va_list ap);
  60
  61 DIR *ul_path_opendir(struct path_cxt *pc, const char *path);
  62 DIR *ul_path_vopendirf(struct path_cxt *pc, const char *path, va_list ap);
  63 DIR *ul_path_opendirf(struct path_cxt *pc, const char *path, ...)
  64                                 __attribute__ ((__format__ (__printf__, 2, 3)));
  65
  66 ssize_t ul_path_readlink(struct path_cxt *pc, char *buf, size_t bufsiz, const char *path);
  67 ssize_t ul_path_readlinkf(struct path_cxt *pc, char *buf, size_t bufsiz, const char *path, ...)
  68                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  69
  70 int ul_path_read(struct path_cxt *pc, char *buf, size_t len, const char *path);
  71 int ul_path_vreadf(struct path_cxt *pc, char *buf, size_t len, const char *path, va_list ap);
  72 int ul_path_readf(struct path_cxt *pc, char *buf, size_t len, const char *path, ...)
  73                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  74
  75 int ul_path_read_string(struct path_cxt *pc, char **str, const char *path);
  76 int ul_path_readf_string(struct path_cxt *pc, char **str, const char *path, ...)
  77                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  78
  79 int ul_path_read_buffer(struct path_cxt *pc, char *buf, size_t bufsz, const char *path);
  80 int ul_path_readf_buffer(struct path_cxt *pc, char *buf, size_t bufsz, const char *path, ...)
  81                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  82
  83 int ul_path_scanf(struct path_cxt *pc, const char *path, const char *fmt, ...);
  84 int ul_path_scanff(struct path_cxt *pc, const char *path, va_list ap, const char *fmt, ...)
  85                                 __attribute__ ((__format__ (__scanf__, 4, 5)));
  86
  87 int ul_path_read_majmin(struct path_cxt *pc, dev_t *res, const char *path);
  88 int ul_path_readf_majmin(struct path_cxt *pc, dev_t *res, const char *path, ...)
  89                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  90
  91 int ul_path_read_u32(struct path_cxt *pc, uint32_t *res, const char *path);
  92 int ul_path_readf_u32(struct path_cxt *pc, uint32_t *res, const char *path, ...)
  93                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  94
  95 int ul_path_read_s32(struct path_cxt *pc, int32_t *res, const char *path);
  96 int ul_path_readf_s32(struct path_cxt *pc, int32_t *res, const char *path, ...)
  97                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  98
  99 int ul_path_read_u64(struct path_cxt *pc, uint64_t *res, const char *path);
 100 int ul_path_readf_u64(struct path_cxt *pc, uint64_t *res, const char *path, ...)
 101                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 102
 103 int ul_path_read_s64(struct path_cxt *pc, int64_t *res, const char *path);
 104 int ul_path_readf_s64(struct path_cxt *pc, int64_t *res, const char *path, ...)
 105                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 106
 107 int ul_path_write_string(struct path_cxt *pc, const char *str, const char *path);
 108 int ul_path_writef_string(struct path_cxt *pc, const char *str, const char *path, ...)
 109                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 110
 111 int ul_path_write_u64(struct path_cxt *pc, uint64_t num, const char *path);
 112 int ul_path_writef_u64(struct path_cxt *pc, uint64_t num, const char *path, ...)
 113                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 114
 115 int ul_path_count_dirents(struct path_cxt *pc, const char *path);
 116 int ul_path_countf_dirents(struct path_cxt *pc, const char *path, ...)
 117                                 __attribute__ ((__format__ (__printf__, 2, 3)));
 118
 119 FILE *ul_prefix_fopen(const char *prefix, const char *path, const char *mode);
 120
 121
 122 #ifdef HAVE_CPU_SET_T
 123 # include "cpuset.h"
 124 int ul_path_readf_cpuset(struct path_cxt *pc, cpu_set_t **set, int maxcpus, const char *path, ...)
 125                                 __attribute__ ((__format__ (__printf__, 4, 5)));
 126
 127 int ul_path_readf_cpulist(struct path_cxt *pc, cpu_set_t **set, int maxcpus, const char *path, ...)
 128                                 __attribute__ ((__format__ (__printf__, 4, 5)));
 129 #endif /* HAVE_CPU_SET_T */
 130 #endif /* UTIL_LINUX_PATH_H */