| 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
| 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 <lttng/kernel-version.h> |
| 12 | #include <linux/fdtable.h> |
| 13 | #include <linux/sched.h> |
| 14 | |
| 15 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(6,7,0)) |
| 16 | static inline |
| 17 | struct file *lttng_lookup_fdget_rcu(unsigned int fd) |
| 18 | { |
| 19 | return lookup_fdget_rcu(fd); |
| 20 | } |
| 21 | |
| 22 | #elif ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,11,0)) || \ |
| 23 | LTTNG_KERNEL_RANGE(5,10,220, 5,11,0)) |
| 24 | static inline |
| 25 | struct file *lttng_lookup_fdget_rcu(unsigned int fd) |
| 26 | { |
| 27 | struct file* file = lookup_fd_rcu(fd); |
| 28 | |
| 29 | if (unlikely(!file || !get_file_rcu(file))) |
| 30 | return NULL; |
| 31 | return file; |
| 32 | } |
| 33 | #else |
| 34 | static inline |
| 35 | struct file *lttng_lookup_fdget_rcu(unsigned int fd) |
| 36 | { |
| 37 | struct file* file = fcheck(fd); |
| 38 | |
| 39 | if (unlikely(!file || !get_file_rcu(file))) |
| 40 | return NULL; |
| 41 | return file; |
| 42 | } |
| 43 | #endif |
| 44 | |
| 45 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(6,10,0)) |
| 46 | static inline |
| 47 | bool lttng_close_on_exec(unsigned int fd, const struct files_struct *files) |
| 48 | { |
| 49 | return close_on_exec(fd, files); |
| 50 | } |
| 51 | #else |
| 52 | static inline |
| 53 | bool lttng_close_on_exec(unsigned int fd, const struct files_struct *files) |
| 54 | { |
| 55 | return close_on_exec(fd, files_fdtable(files)); |
| 56 | } |
| 57 | #endif |
| 58 | |
| 59 | #endif /* _LTTNG_WRAPPER_FDTABLE_H */ |