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 <sys/stat.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_stat(struct path_cxt *pc, struct stat *sb, const char *path);
  50 int ul_path_access(struct path_cxt *pc, int mode, const char *path);
  51 int ul_path_accessf(struct path_cxt *pc, int mode, const char *path, ...)
  52                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  53
  54 int ul_path_open(struct path_cxt *pc, int flags, const char *path);
  55 int ul_path_openf(struct path_cxt *pc, int flags, const char *path, ...)
  56                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  57 int ul_path_vopenf(struct path_cxt *pc, int flags, const char *path, va_list ap);
  58
  59 FILE *ul_path_fopen(struct path_cxt *pc, const char *mode, const char *path);
  60 FILE *ul_path_fopenf(struct path_cxt *pc, const char *mode, const char *path, ...)
  61                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  62 FILE *ul_path_vfopenf(struct path_cxt *pc, const char *mode, const char *path, va_list ap);
  63
  64 DIR *ul_path_opendir(struct path_cxt *pc, const char *path);
  65 DIR *ul_path_vopendirf(struct path_cxt *pc, const char *path, va_list ap);
  66 DIR *ul_path_opendirf(struct path_cxt *pc, const char *path, ...)
  67                                 __attribute__ ((__format__ (__printf__, 2, 3)));
  68
  69 ssize_t ul_path_readlink(struct path_cxt *pc, char *buf, size_t bufsiz, const char *path);
  70 ssize_t ul_path_readlinkf(struct path_cxt *pc, char *buf, size_t bufsiz, const char *path, ...)
  71                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  72
  73 int ul_path_read(struct path_cxt *pc, char *buf, size_t len, const char *path);
  74 int ul_path_vreadf(struct path_cxt *pc, char *buf, size_t len, const char *path, va_list ap);
  75 int ul_path_readf(struct path_cxt *pc, char *buf, size_t len, const char *path, ...)
  76                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  77
  78 int ul_path_read_string(struct path_cxt *pc, char **str, const char *path);
  79 int ul_path_readf_string(struct path_cxt *pc, char **str, const char *path, ...)
  80                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  81
  82 int ul_path_read_buffer(struct path_cxt *pc, char *buf, size_t bufsz, const char *path);
  83 int ul_path_readf_buffer(struct path_cxt *pc, char *buf, size_t bufsz, const char *path, ...)
  84                                 __attribute__ ((__format__ (__printf__, 4, 5)));
  85
  86 int ul_path_scanf(struct path_cxt *pc, const char *path, const char *fmt, ...);
  87 int ul_path_scanff(struct path_cxt *pc, const char *path, va_list ap, const char *fmt, ...)
  88                                 __attribute__ ((__format__ (__scanf__, 4, 5)));
  89
  90 int ul_path_read_majmin(struct path_cxt *pc, dev_t *res, const char *path);
  91 int ul_path_readf_majmin(struct path_cxt *pc, dev_t *res, const char *path, ...)
  92                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  93
  94 int ul_path_read_u32(struct path_cxt *pc, uint32_t *res, const char *path);
  95 int ul_path_readf_u32(struct path_cxt *pc, uint32_t *res, const char *path, ...)
  96                                 __attribute__ ((__format__ (__printf__, 3, 4)));
  97
  98 int ul_path_read_s32(struct path_cxt *pc, int32_t *res, const char *path);
  99 int ul_path_readf_s32(struct path_cxt *pc, int32_t *res, const char *path, ...)
 100                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 101
 102 int ul_path_read_u64(struct path_cxt *pc, uint64_t *res, const char *path);
 103 int ul_path_readf_u64(struct path_cxt *pc, uint64_t *res, const char *path, ...)
 104                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 105
 106 int ul_path_read_s64(struct path_cxt *pc, int64_t *res, const char *path);
 107 int ul_path_readf_s64(struct path_cxt *pc, int64_t *res, const char *path, ...)
 108                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 109
 110 int ul_path_write_string(struct path_cxt *pc, const char *str, const char *path);
 111 int ul_path_writef_string(struct path_cxt *pc, const char *str, const char *path, ...)
 112                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 113
 114 int ul_path_write_s64(struct path_cxt *pc, int64_t num, const char *path);
 115 int ul_path_write_u64(struct path_cxt *pc, uint64_t num, const char *path);
 116 int ul_path_writef_u64(struct path_cxt *pc, uint64_t num, const char *path, ...)
 117                                 __attribute__ ((__format__ (__printf__, 3, 4)));
 118
 119 int ul_path_count_dirents(struct path_cxt *pc, const char *path);
 120 int ul_path_countf_dirents(struct path_cxt *pc, const char *path, ...)
 121                                 __attribute__ ((__format__ (__printf__, 2, 3)));
 122
 123 FILE *ul_prefix_fopen(const char *prefix, const char *path, const char *mode);
 124
 125
 126 #ifdef HAVE_CPU_SET_T
 127 # include "cpuset.h"
 128 int ul_path_readf_cpuset(struct path_cxt *pc, cpu_set_t **set, int maxcpus, const char *path, ...)
 129                                 __attribute__ ((__format__ (__printf__, 4, 5)));
 130
 131 int ul_path_readf_cpulist(struct path_cxt *pc, cpu_set_t **set, int maxcpus, const char *path, ...)
 132                                 __attribute__ ((__format__ (__printf__, 4, 5)));
 133 #endif /* HAVE_CPU_SET_T */
 134 #endif /* UTIL_LINUX_PATH_H */