Initial version.

1 files changed, 195 insertions, 0 deletions

diff --git a/src/nxt_file.h b/src/nxt_file.h
new file mode 100644
index 00000000..3ef5fbfb
--- /dev/null
+++ b/src/nxt_file.h
@@ -0,0 +1,195 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) NGINX, Inc.
+ */
+
+#ifndef _NXT_UNIX_FILE_H_INCLUDED_
+#define _NXT_UNIX_FILE_H_INCLUDED_
+
+
+typedef int                         nxt_fd_t;
+
+#define NXT_FILE_INVALID            -1
+
+typedef nxt_uint_t                  nxt_file_access_t;
+typedef struct stat                 nxt_file_info_t;
+
+
+#define NXT_FILE_SYSTEM_NAME_UTF8   1
+
+typedef u_char                      nxt_file_name_t;
+
+
+typedef struct {
+    size_t                          len;
+    nxt_file_name_t                 *start;
+} nxt_file_name_str_t;
+
+
+#define                                                                       \
+nxt_file_name_str_set(file_name, mem_pool, name)                              \
+    ((file_name) = (nxt_file_name_t *) (name), NXT_OK)
+
+
+#define                                                                       \
+nxt_file_name_alloc(mem_pool, len)                                            \
+    nxt_mem_nalloc(mem_pool, len)
+
+
+#define                                                                       \
+nxt_file_name_copy(dst, src, len)                                             \
+    nxt_cpymem(dst, src, len)
+
+
+#define                                                                       \
+nxt_file_name_add(dst, src, len)                                              \
+    nxt_cpymem(dst, src, len)
+
+
+#if (NXT_HAVE_CASELESS_FILESYSTEM)
+
+/* MacOSX, Cygwin. */
+
+#define                                                                       \
+nxt_file_name_eq(fn1, fn2)                                                    \
+    (nxt_strcasecmp(fn1, fn2) == 0)
+
+#else
+
+#define                                                                       \
+nxt_file_name_eq(fn1, fn2)                                                    \
+    (nxt_strcmp(fn1, fn2) == 0)
+
+#endif
+
+
+#define                                                                       \
+nxt_file_name_is_absolute(name)                                               \
+    (name[0] == '/')
+
+
+#define NXT_MAX_PATH_LEN            MAXPATHLEN
+
+
+typedef enum {
+    NXT_FILE_UNKNOWN = 0,
+    NXT_FILE_REGULAR,
+    NXT_FILE_DIRECTORY,
+} nxt_file_type_t;
+
+
+typedef struct {
+    nxt_file_name_t                 *name;
+
+    /* Both are int's. */
+    nxt_fd_t                        fd;
+    nxt_err_t                       error;
+
+#define NXT_FILE_ACCESSED_LONG_AGO  0xffff
+    /*
+     * Number of seconds ago the file content was last
+     * read.  The maximum value is about 18 hours.
+     */
+    uint16_t                        accessed;
+
+    uint8_t                         type;       /* nxt_file_type_t */
+
+    /*
+     * Log open() file error with given log level if it is non zero.
+     * Note that zero log level is NXT_LOG_EMERG.
+     */
+    uint8_t                         log_level;
+
+    nxt_time_t                      mtime;
+    nxt_off_t                       size;
+} nxt_file_t;
+
+
+NXT_EXPORT nxt_int_t nxt_file_open(nxt_file_t *file, nxt_uint_t mode,
+    nxt_uint_t create, nxt_file_access_t access);
+
+#define nxt_file_open_n             "open"
+
+
+/* The file open access modes. */
+#define NXT_FILE_RDONLY             O_RDONLY
+#define NXT_FILE_WRONLY             O_WRONLY
+#define NXT_FILE_RDWR               O_RDWR
+#define NXT_FILE_APPEND             (O_WRONLY | O_APPEND)
+
+/* The file creation modes. */
+#define NXT_FILE_CREATE_OR_OPEN     O_CREAT
+#define NXT_FILE_OPEN               0
+#define NXT_FILE_TRUNCATE           (O_CREAT | O_TRUNC)
+
+/* The file access rights. */
+#define NXT_FILE_DEFAULT_ACCESS     0644
+#define NXT_FILE_OWNER_ACCESS       0600
+
+
+NXT_EXPORT void nxt_file_close(nxt_file_t *file);
+NXT_EXPORT ssize_t nxt_file_write(nxt_file_t *file, const u_char *buf,
+    size_t size, nxt_off_t offset);
+NXT_EXPORT ssize_t nxt_file_read(nxt_file_t *file, u_char *buf, size_t size,
+    nxt_off_t offset);
+NXT_EXPORT void nxt_file_read_ahead(nxt_file_t *file, nxt_off_t offset,
+    size_t size);
+NXT_EXPORT nxt_int_t nxt_file_info(nxt_file_t *file, nxt_file_info_t *fi);
+
+
+#define                                                                       \
+nxt_is_dir(fi)                                                                \
+    (S_ISDIR((fi)->st_mode))
+
+#define                                                                       \
+nxt_is_file(fi)                                                               \
+    (S_ISREG((fi)->st_mode))
+
+#define                                                                       \
+nxt_file_size(fi)                                                             \
+    (fi)->st_size
+
+#define                                                                       \
+nxt_file_mtime(fi)                                                            \
+    (fi)->st_mtime
+
+
+NXT_EXPORT nxt_int_t nxt_file_delete(nxt_file_name_t *name);
+NXT_EXPORT nxt_int_t nxt_file_set_access(nxt_file_name_t *name,
+    nxt_file_access_t access);
+NXT_EXPORT nxt_int_t nxt_file_rename(nxt_file_name_t *old_name,
+    nxt_file_name_t *new_name);
+
+NXT_EXPORT nxt_int_t nxt_fd_nonblocking(nxt_fd_t fd);
+NXT_EXPORT nxt_int_t nxt_fd_blocking(nxt_fd_t fd);
+NXT_EXPORT ssize_t nxt_fd_write(nxt_fd_t fd, u_char *buf, size_t size);
+NXT_EXPORT ssize_t nxt_fd_read(nxt_fd_t fd, u_char *buf, size_t size);
+NXT_EXPORT void nxt_fd_close(nxt_fd_t fd);
+
+NXT_EXPORT nxt_int_t nxt_file_redirect(nxt_file_t *file, nxt_fd_t fd);
+NXT_EXPORT nxt_int_t nxt_file_stderr(nxt_file_t *file);
+NXT_EXPORT nxt_int_t nxt_stderr_start(void);
+
+
+#define nxt_stdout  STDOUT_FILENO
+#define nxt_stderr  STDERR_FILENO
+
+
+#define                                                                       \
+nxt_write_console(fd, buf, size)                                              \
+    write(fd, buf, size)
+
+#define                                                                       \
+nxt_write_syslog(priority, message)                                           \
+    syslog(priority, "%s", message)
+
+
+NXT_EXPORT nxt_int_t nxt_pipe_create(nxt_fd_t *pp, nxt_bool_t nbread,
+    nxt_bool_t nbwrite);
+NXT_EXPORT void nxt_pipe_close(nxt_fd_t *pp);
+
+NXT_EXPORT size_t nxt_dir_current(char *buf, size_t len);
+
+
+#endif /* _NXT_UNIX_FILE_H_INCLUDED_ */