1 2 /* 3 * Copyright (C) Igor Sysoev 4 * Copyright (C) NGINX, Inc. 5 */ 6 7 #ifndef _NXT_UNIX_FILE_H_INCLUDED_ 8 #define _NXT_UNIX_FILE_H_INCLUDED_ 9 10 11 typedef int nxt_fd_t; 12 13 #define NXT_FILE_INVALID -1 14 15 typedef nxt_uint_t nxt_file_access_t; 16 typedef struct stat nxt_file_info_t; 17 18 19 #define NXT_FILE_SYSTEM_NAME_UTF8 1 20 21 typedef u_char nxt_file_name_t; 22 23 24 typedef struct { 25 size_t len; 26 nxt_file_name_t *start; 27 } nxt_file_name_str_t; 28 29 30 #define \ 31 nxt_file_name_str_set(file_name, mem_pool, name) \ 32 ((file_name) = (nxt_file_name_t *) (name), NXT_OK) 33 34 35 #define \ 36 nxt_file_name_alloc(mem_pool, len) \ 37 nxt_mem_nalloc(mem_pool, len) 38 39 40 #define \ 41 nxt_file_name_copy(dst, src, len) \ 42 nxt_cpymem(dst, src, len) 43 44 45 #define \ 46 nxt_file_name_add(dst, src, len) \ 47 nxt_cpymem(dst, src, len) 48 49 50 #if (NXT_HAVE_CASELESS_FILESYSTEM) 51 52 /* MacOSX, Cygwin. */ 53 54 #define \ 55 nxt_file_name_eq(fn1, fn2) \ 56 (nxt_strcasecmp(fn1, fn2) == 0) 57 58 #else 59 60 #define \ 61 nxt_file_name_eq(fn1, fn2) \ 62 (nxt_strcmp(fn1, fn2) == 0) 63 64 #endif 65 66 67 #define \ 68 nxt_file_name_is_absolute(name) \ 69 (name[0] == '/') 70 71 72 #define NXT_MAX_PATH_LEN MAXPATHLEN 73 74 75 typedef enum { 76 NXT_FILE_UNKNOWN = 0, 77 NXT_FILE_REGULAR, 78 NXT_FILE_DIRECTORY, 79 } nxt_file_type_t; 80 81 82 typedef struct { 83 nxt_file_name_t *name; 84 85 /* Both are int's. */ 86 nxt_fd_t fd; 87 nxt_err_t error; 88 89 #define NXT_FILE_ACCESSED_LONG_AGO 0xffff 90 /* 91 * Number of seconds ago the file content was last 92 * read. The maximum value is about 18 hours. 93 */ 94 uint16_t accessed; 95 96 uint8_t type; /* nxt_file_type_t */ 97 98 /* 99 * Log open() file error with given log level if it is non zero. 100 * Note that zero log level is NXT_LOG_EMERG. 101 */ 102 uint8_t log_level; 103 104 nxt_time_t mtime; 105 nxt_off_t size; 106 } nxt_file_t; 107 108 109 NXT_EXPORT nxt_int_t nxt_file_open(nxt_file_t *file, nxt_uint_t mode, 110 nxt_uint_t create, nxt_file_access_t access); 111 112 #define nxt_file_open_n "open" 113 114 115 /* The file open access modes. */ 116 #define NXT_FILE_RDONLY O_RDONLY 117 #define NXT_FILE_WRONLY O_WRONLY 118 #define NXT_FILE_RDWR O_RDWR 119 #define NXT_FILE_APPEND (O_WRONLY | O_APPEND) 120 121 /* The file creation modes. */ 122 #define NXT_FILE_CREATE_OR_OPEN O_CREAT 123 #define NXT_FILE_OPEN 0 124 #define NXT_FILE_TRUNCATE (O_CREAT | O_TRUNC) 125 126 /* The file access rights. */ 127 #define NXT_FILE_DEFAULT_ACCESS 0644 128 #define NXT_FILE_OWNER_ACCESS 0600 129 130 131 NXT_EXPORT void nxt_file_close(nxt_file_t *file); 132 NXT_EXPORT ssize_t nxt_file_write(nxt_file_t *file, const u_char *buf, 133 size_t size, nxt_off_t offset); 134 NXT_EXPORT ssize_t nxt_file_read(nxt_file_t *file, u_char *buf, size_t size, 135 nxt_off_t offset); 136 NXT_EXPORT void nxt_file_read_ahead(nxt_file_t *file, nxt_off_t offset, 137 size_t size); 138 NXT_EXPORT nxt_int_t nxt_file_info(nxt_file_t *file, nxt_file_info_t *fi); 139 140 141 #define \ 142 nxt_is_dir(fi) \ 143 (S_ISDIR((fi)->st_mode)) 144 145 #define \ 146 nxt_is_file(fi) \ 147 (S_ISREG((fi)->st_mode)) 148 149 #define \ 150 nxt_file_size(fi) \ 151 (fi)->st_size 152 153 #define \ 154 nxt_file_mtime(fi) \ 155 (fi)->st_mtime 156 157 158 NXT_EXPORT nxt_int_t nxt_file_delete(nxt_file_name_t *name); 159 NXT_EXPORT nxt_int_t nxt_file_set_access(nxt_file_name_t *name, 160 nxt_file_access_t access); 161 NXT_EXPORT nxt_int_t nxt_file_rename(nxt_file_name_t *old_name, 162 nxt_file_name_t *new_name); 163 164 NXT_EXPORT nxt_int_t nxt_fd_nonblocking(nxt_fd_t fd); 165 NXT_EXPORT nxt_int_t nxt_fd_blocking(nxt_fd_t fd); 166 NXT_EXPORT ssize_t nxt_fd_write(nxt_fd_t fd, u_char *buf, size_t size); 167 NXT_EXPORT ssize_t nxt_fd_read(nxt_fd_t fd, u_char *buf, size_t size); 168 NXT_EXPORT void nxt_fd_close(nxt_fd_t fd); 169 170 NXT_EXPORT nxt_int_t nxt_file_redirect(nxt_file_t *file, nxt_fd_t fd); 171 NXT_EXPORT nxt_int_t nxt_file_stderr(nxt_file_t *file); 172 NXT_EXPORT nxt_int_t nxt_stderr_start(void); 173 174 175 #define nxt_stdout STDOUT_FILENO 176 #define nxt_stderr STDERR_FILENO 177 178 179 #define \ 180 nxt_write_console(fd, buf, size) \ 181 write(fd, buf, size) 182 183 #define \ 184 nxt_write_syslog(priority, message) \ 185 syslog(priority, "%s", message) 186 187 188 NXT_EXPORT nxt_int_t nxt_pipe_create(nxt_fd_t *pp, nxt_bool_t nbread, 189 nxt_bool_t nbwrite); 190 NXT_EXPORT void nxt_pipe_close(nxt_fd_t *pp); 191 192 NXT_EXPORT size_t nxt_dir_current(char *buf, size_t len); 193 194 195 #endif /* _NXT_UNIX_FILE_H_INCLUDED_ */ 196