| 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 <lttng-kernel-version.h> |
| 12 | #include <linux/fdtable.h> |
| 13 | #include <linux/sched.h> |
| 14 | |
| 15 | #if ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,11,0)) || \ |
| 16 | LTTNG_KERNEL_RANGE(5,10,220, 5,11,0)) |
| 17 | static inline |
| 18 | struct file *lttng_lookup_fd_rcu(unsigned int fd) |
| 19 | { |
| 20 | return lookup_fd_rcu(fd); |
| 21 | } |
| 22 | #else |
| 23 | static inline |
| 24 | struct file *lttng_lookup_fd_rcu(unsigned int fd) |
| 25 | { |
| 26 | return fcheck(fd); |
| 27 | } |
| 28 | #endif |
| 29 | |
| 30 | #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,7,0)) |
| 31 | |
| 32 | int lttng_iterate_fd(struct files_struct *files, |
| 33 | unsigned int first, |
| 34 | int (*cb)(const void *, struct file *, unsigned int), |
| 35 | const void *ctx); |
| 36 | |
| 37 | #else |
| 38 | |
| 39 | /* |
| 40 | * iterate_fd() appeared at commit |
| 41 | * c3c073f808b22dfae15ef8412b6f7b998644139a in the Linux kernel (first |
| 42 | * released kernel: v3.7). |
| 43 | */ |
| 44 | #define lttng_iterate_fd iterate_fd |
| 45 | |
| 46 | #endif |
| 47 | |
| 48 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,4,0)) |
| 49 | |
| 50 | static inline bool lttng_close_on_exec(int fd, const struct fdtable *fdt) |
| 51 | { |
| 52 | return close_on_exec(fd, fdt); |
| 53 | } |
| 54 | |
| 55 | #else |
| 56 | |
| 57 | static inline bool lttng_close_on_exec(int fd, const struct fdtable *fdt) |
| 58 | { |
| 59 | return FD_ISSET(fd, fdt->close_on_exec); |
| 60 | } |
| 61 | |
| 62 | #endif |
| 63 | |
| 64 | #endif /* _LTTNG_WRAPPER_FDTABLE_H */ |