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 int ul_path_is_accessible(struct path_cxt *pc); 46 47 char *ul_path_get_abspath(struct path_cxt *pc, char *buf, size_t bufsz, const char *path, ...) 48 __attribute__ ((__format__ (__printf__, 4, 5))); 49 50 int ul_path_stat(struct path_cxt *pc, struct stat *sb, const char *path); 51 int ul_path_access(struct path_cxt *pc, int mode, const char *path); 52 int ul_path_accessf(struct path_cxt *pc, int mode, const char *path, ...) 53 __attribute__ ((__format__ (__printf__, 3, 4))); 54 55 int ul_path_open(struct path_cxt *pc, int flags, const char *path); 56 int ul_path_openf(struct path_cxt *pc, int flags, const char *path, ...) 57 __attribute__ ((__format__ (__printf__, 3, 4))); 58 int ul_path_vopenf(struct path_cxt *pc, int flags, const char *path, va_list ap); 59 60 FILE *ul_path_fopen(struct path_cxt *pc, const char *mode, const char *path); 61 FILE *ul_path_fopenf(struct path_cxt *pc, const char *mode, const char *path, ...) 62 __attribute__ ((__format__ (__printf__, 3, 4))); 63 FILE *ul_path_vfopenf(struct path_cxt *pc, const char *mode, const char *path, va_list ap); 64 65 DIR *ul_path_opendir(struct path_cxt *pc, const char *path); 66 DIR *ul_path_vopendirf(struct path_cxt *pc, const char *path, va_list ap); 67 DIR *ul_path_opendirf(struct path_cxt *pc, const char *path, ...) 68 __attribute__ ((__format__ (__printf__, 2, 3))); 69 70 ssize_t ul_path_readlink(struct path_cxt *pc, char *buf, size_t bufsiz, const char *path); 71 ssize_t ul_path_readlinkf(struct path_cxt *pc, char *buf, size_t bufsiz, const char *path, ...) 72 __attribute__ ((__format__ (__printf__, 4, 5))); 73 74 int ul_path_read(struct path_cxt *pc, char *buf, size_t len, const char *path); 75 int ul_path_vreadf(struct path_cxt *pc, char *buf, size_t len, const char *path, va_list ap); 76 int ul_path_readf(struct path_cxt *pc, char *buf, size_t len, const char *path, ...) 77 __attribute__ ((__format__ (__printf__, 4, 5))); 78 79 int ul_path_read_string(struct path_cxt *pc, char **str, const char *path); 80 int ul_path_readf_string(struct path_cxt *pc, char **str, const char *path, ...) 81 __attribute__ ((__format__ (__printf__, 3, 4))); 82 83 int ul_path_read_buffer(struct path_cxt *pc, char *buf, size_t bufsz, const char *path); 84 int ul_path_readf_buffer(struct path_cxt *pc, char *buf, size_t bufsz, const char *path, ...) 85 __attribute__ ((__format__ (__printf__, 4, 5))); 86 87 int ul_path_scanf(struct path_cxt *pc, const char *path, const char *fmt, ...); 88 int ul_path_scanff(struct path_cxt *pc, const char *path, va_list ap, const char *fmt, ...) 89 __attribute__ ((__format__ (__scanf__, 4, 5))); 90 91 int ul_path_read_majmin(struct path_cxt *pc, dev_t *res, const char *path); 92 int ul_path_readf_majmin(struct path_cxt *pc, dev_t *res, const char *path, ...) 93 __attribute__ ((__format__ (__printf__, 3, 4))); 94 95 int ul_path_read_u32(struct path_cxt *pc, uint32_t *res, const char *path); 96 int ul_path_readf_u32(struct path_cxt *pc, uint32_t *res, const char *path, ...) 97 __attribute__ ((__format__ (__printf__, 3, 4))); 98 99 int ul_path_read_s32(struct path_cxt *pc, int32_t *res, const char *path); 100 int ul_path_readf_s32(struct path_cxt *pc, int32_t *res, const char *path, ...) 101 __attribute__ ((__format__ (__printf__, 3, 4))); 102 103 int ul_path_read_u64(struct path_cxt *pc, uint64_t *res, const char *path); 104 int ul_path_readf_u64(struct path_cxt *pc, uint64_t *res, const char *path, ...) 105 __attribute__ ((__format__ (__printf__, 3, 4))); 106 107 int ul_path_read_s64(struct path_cxt *pc, int64_t *res, const char *path); 108 int ul_path_readf_s64(struct path_cxt *pc, int64_t *res, const char *path, ...) 109 __attribute__ ((__format__ (__printf__, 3, 4))); 110 111 int ul_path_write_string(struct path_cxt *pc, const char *str, const char *path); 112 int ul_path_writef_string(struct path_cxt *pc, const char *str, const char *path, ...) 113 __attribute__ ((__format__ (__printf__, 3, 4))); 114 115 int ul_path_write_s64(struct path_cxt *pc, int64_t num, const char *path); 116 int ul_path_write_u64(struct path_cxt *pc, uint64_t num, const char *path); 117 int ul_path_writef_u64(struct path_cxt *pc, uint64_t num, const char *path, ...) 118 __attribute__ ((__format__ (__printf__, 3, 4))); 119 120 int ul_path_count_dirents(struct path_cxt *pc, const char *path); 121 int ul_path_countf_dirents(struct path_cxt *pc, const char *path, ...) 122 __attribute__ ((__format__ (__printf__, 2, 3))); 123 124 FILE *ul_prefix_fopen(const char *prefix, const char *path, const char *mode); 125 126 127 #ifdef HAVE_CPU_SET_T 128 # include "cpuset.h" 129 int ul_path_readf_cpuset(struct path_cxt *pc, cpu_set_t **set, int maxcpus, const char *path, ...) 130 __attribute__ ((__format__ (__printf__, 4, 5))); 131 132 int ul_path_readf_cpulist(struct path_cxt *pc, cpu_set_t **set, int maxcpus, const char *path, ...) 133 __attribute__ ((__format__ (__printf__, 4, 5))); 134 #endif /* HAVE_CPU_SET_T */ 135 #endif /* UTIL_LINUX_PATH_H */ 136