projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
| 83f9bb7f MD |
2 | * wrapper/fdtable.c |
| 3 | * | |
| 4 | * Copyright (C) 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 83f9bb7f MD |
5 | */ |
| 6 | ||
| 5f4c791e | 7 | #include <lttng/kernel-version.h> |
| 83f9bb7f | 8 | #include <linux/spinlock.h> |
| 5a2f5e92 | 9 | #include <wrapper/fdtable.h> |
| 83f9bb7f | 10 | |
| 5f4c791e | 11 | #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,7,0)) |
| 83f9bb7f MD |
12 | |
| 13 | /* | |
| 14 | * Reimplementation of iterate_fd() for kernels between 2.6.32 and 3.6 | |
| 15 | * (inclusive). | |
| 16 | */ | |
| 17 | int lttng_iterate_fd(struct files_struct *files, | |
| 18 | unsigned int first, | |
| 19 | int (*cb)(const void *, struct file *, unsigned int), | |
| 20 | const void *ctx) | |
| 21 | { | |
| 22 | struct fdtable *fdt; | |
| 23 | struct file *filp; | |
| 24 | unsigned int i; | |
| 25 | int res = 0; | |
| 26 | ||
| 27 | if (!files) | |
| 28 | return 0; | |
| 29 | spin_lock(&files->file_lock); | |
| 30 | fdt = files_fdtable(files); | |
| 31 | for (i = 0; i < fdt->max_fds; i++) { | |
| 32 | filp = fcheck_files(files, i); | |
| 33 | if (!filp) | |
| 34 | continue; | |
| 35 | res = cb(ctx, filp, i); | |
| 36 | if (res) | |
| 37 | break; | |
| 38 | } | |
| 39 | spin_unlock(&files->file_lock); | |
| 40 | return res; | |
| 41 | } | |
| 42 | ||
| 43 | #endif |