wrapper/fdtable.h

   1 /* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
   2  *
   3  * wrapper/fdtable.h
   4  *
   5  * Copyright (C) 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  */
   7
   8 #ifndef _LTTNG_WRAPPER_FDTABLE_H
   9 #define _LTTNG_WRAPPER_FDTABLE_H
  10
  11 #include <linux/version.h>
  12 #include <linux/fdtable.h>
  13
  14 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0))
  15
  16 int lttng_iterate_fd(struct files_struct *files,
  17                 unsigned int first,
  18                 int (*cb)(const void *, struct file *, unsigned int),
  19                 const void *ctx);
  20
  21 #else
  22
  23 /*
  24  * iterate_fd() appeared at commit
  25  * c3c073f808b22dfae15ef8412b6f7b998644139a in the Linux kernel (first
  26  * released kernel: v3.7).
  27  */
  28 #define lttng_iterate_fd        iterate_fd
  29
  30 #endif
  31
  32 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
  33
  34 static inline bool lttng_close_on_exec(int fd, const struct fdtable *fdt)
  35 {
  36         return close_on_exec(fd, fdt);
  37 }
  38
  39 #else
  40
  41 static inline bool lttng_close_on_exec(int fd, const struct fdtable *fdt)
  42 {
  43         return FD_ISSET(fd, fdt->close_on_exec);
  44 }
  45
  46 #endif
  47
  48 #endif /* _LTTNG_WRAPPER_FDTABLE_H */