LCOV - code coverage report
Current view: top level - basic - fd-util.h (source / functions) Hit Total Coverage
Test: main_coverage.info Lines: 14 16 87.5 %
Date: 2019-08-22 15:41:25 Functions: 5 6 83.3 %

          Line data    Source code
       1             : /* SPDX-License-Identifier: LGPL-2.1+ */
       2             : #pragma once
       3             : 
       4             : #include <dirent.h>
       5             : #include <stdbool.h>
       6             : #include <stdio.h>
       7             : #include <sys/socket.h>
       8             : 
       9             : #include "macro.h"
      10             : 
      11             : /* Make sure we can distinguish fd 0 and NULL */
      12             : #define FD_TO_PTR(fd) INT_TO_PTR((fd)+1)
      13             : #define PTR_TO_FD(p) (PTR_TO_INT(p)-1)
      14             : 
      15             : int close_nointr(int fd);
      16             : int safe_close(int fd);
      17             : void safe_close_pair(int p[static 2]);
      18             : 
      19         172 : static inline int safe_close_above_stdio(int fd) {
      20         172 :         if (fd < 3) /* Don't close stdin/stdout/stderr, but still invalidate the fd by returning -1 */
      21         156 :                 return -1;
      22             : 
      23          16 :         return safe_close(fd);
      24             : }
      25             : 
      26             : void close_many(const int fds[], size_t n_fd);
      27             : 
      28             : int fclose_nointr(FILE *f);
      29             : FILE* safe_fclose(FILE *f);
      30             : DIR* safe_closedir(DIR *f);
      31             : 
      32      229300 : static inline void closep(int *fd) {
      33      229300 :         safe_close(*fd);
      34      229300 : }
      35             : 
      36         319 : static inline void close_pairp(int (*p)[2]) {
      37         319 :         safe_close_pair(*p);
      38         319 : }
      39             : 
      40       33586 : static inline void fclosep(FILE **f) {
      41       33586 :         safe_fclose(*f);
      42       33586 : }
      43             : 
      44             : DEFINE_TRIVIAL_CLEANUP_FUNC(FILE*, pclose);
      45       71894 : DEFINE_TRIVIAL_CLEANUP_FUNC(DIR*, closedir);
      46             : 
      47             : #define _cleanup_close_ _cleanup_(closep)
      48             : #define _cleanup_fclose_ _cleanup_(fclosep)
      49             : #define _cleanup_pclose_ _cleanup_(pclosep)
      50             : #define _cleanup_closedir_ _cleanup_(closedirp)
      51             : #define _cleanup_close_pair_ _cleanup_(close_pairp)
      52             : 
      53             : int fd_nonblock(int fd, bool nonblock);
      54             : int fd_cloexec(int fd, bool cloexec);
      55             : 
      56             : int close_all_fds(const int except[], size_t n_except);
      57             : 
      58             : int same_fd(int a, int b);
      59             : 
      60             : void cmsg_close_all(struct msghdr *mh);
      61             : 
      62             : bool fdname_is_valid(const char *s);
      63             : 
      64             : int fd_get_path(int fd, char **ret);
      65             : 
      66             : int move_fd(int from, int to, int cloexec);
      67             : 
      68             : enum {
      69             :         ACQUIRE_NO_DEV_NULL = 1 << 0,
      70             :         ACQUIRE_NO_MEMFD    = 1 << 1,
      71             :         ACQUIRE_NO_PIPE     = 1 << 2,
      72             :         ACQUIRE_NO_TMPFILE  = 1 << 3,
      73             :         ACQUIRE_NO_REGULAR  = 1 << 4,
      74             : };
      75             : 
      76             : int acquire_data_fd(const void *data, size_t size, unsigned flags);
      77             : 
      78             : int fd_duplicate_data_fd(int fd);
      79             : 
      80             : int fd_move_above_stdio(int fd);
      81             : 
      82             : int rearrange_stdio(int original_input_fd, int original_output_fd, int original_error_fd);
      83             : 
      84           0 : static inline int make_null_stdio(void) {
      85           0 :         return rearrange_stdio(-1, -1, -1);
      86             : }
      87             : 
      88             : /* Like TAKE_PTR() but for file descriptors, resetting them to -1 */
      89             : #define TAKE_FD(fd)                             \
      90             :         ({                                      \
      91             :                 int _fd_ = (fd);                \
      92             :                 (fd) = -1;                      \
      93             :                 _fd_;                           \
      94             :         })
      95             : 
      96             : int fd_reopen(int fd, int flags);
      97             : 
      98             : int read_nr_open(void);

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