basic/missing: move syscall definitions to basic/missing_syscall.h
We have a bunch of syscall wrapper definitions and it's easier to see that they follow the same pattern if they are not interspersed with other defines. Change the wrappers to be uniform: - if __NR_XXX is not defined, do not bother to call the syscall, and return -1/ENOSYS immediately. - do not check __NR_XXX defines if we detect the symbol as defined, since we don't need them anyway - reindent stuff for readability New file basic/missing_syscall.h is included at the end of missing.h because it might make use of some of the definitions in missing.h.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
parent
a44202e98b
commit
2f368e4a11
|
|
@ -744,6 +744,7 @@ noinst_LTLIBRARIES += \
|
|||
|
||||
libbasic_la_SOURCES = \
|
||||
src/basic/missing.h \
|
||||
src/basic/missing_syscall.h \
|
||||
src/basic/capability-util.c \
|
||||
src/basic/capability-util.h \
|
||||
src/basic/c-rbtree.c \
|
||||
|
|
|
|||
|
|
@ -135,84 +135,6 @@
|
|||
#define SOL_SCTP 132
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_PIVOT_ROOT
|
||||
static inline int pivot_root(const char *new_root, const char *put_old) {
|
||||
return syscall(SYS_pivot_root, new_root, put_old);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef __NR_memfd_create
|
||||
# if defined __x86_64__
|
||||
# define __NR_memfd_create 319
|
||||
# elif defined __arm__
|
||||
# define __NR_memfd_create 385
|
||||
# elif defined __aarch64__
|
||||
# define __NR_memfd_create 279
|
||||
# elif defined __s390__
|
||||
# define __NR_memfd_create 350
|
||||
# elif defined _MIPS_SIM
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI32
|
||||
# define __NR_memfd_create 4354
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_NABI32
|
||||
# define __NR_memfd_create 6318
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI64
|
||||
# define __NR_memfd_create 5314
|
||||
# endif
|
||||
# elif defined __i386__
|
||||
# define __NR_memfd_create 356
|
||||
# else
|
||||
# warning "__NR_memfd_create unknown for your architecture"
|
||||
# define __NR_memfd_create 0xffffffff
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_MEMFD_CREATE
|
||||
static inline int memfd_create(const char *name, unsigned int flags) {
|
||||
return syscall(__NR_memfd_create, name, flags);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef __NR_getrandom
|
||||
# if defined __x86_64__
|
||||
# define __NR_getrandom 318
|
||||
# elif defined(__i386__)
|
||||
# define __NR_getrandom 355
|
||||
# elif defined(__arm__)
|
||||
# define __NR_getrandom 384
|
||||
# elif defined(__aarch64__)
|
||||
# define __NR_getrandom 278
|
||||
# elif defined(__ia64__)
|
||||
# define __NR_getrandom 1339
|
||||
# elif defined(__m68k__)
|
||||
# define __NR_getrandom 352
|
||||
# elif defined(__s390x__)
|
||||
# define __NR_getrandom 349
|
||||
# elif defined(__powerpc__)
|
||||
# define __NR_getrandom 359
|
||||
# elif defined _MIPS_SIM
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI32
|
||||
# define __NR_getrandom 4353
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_NABI32
|
||||
# define __NR_getrandom 6317
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI64
|
||||
# define __NR_getrandom 5313
|
||||
# endif
|
||||
# else
|
||||
# warning "__NR_getrandom unknown for your architecture"
|
||||
# define __NR_getrandom 0xffffffff
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_GETRANDOM
|
||||
static inline int getrandom(void *buffer, size_t count, unsigned flags) {
|
||||
return syscall(__NR_getrandom, buffer, count, flags);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef GRND_NONBLOCK
|
||||
#define GRND_NONBLOCK 0x0001
|
||||
#endif
|
||||
|
|
@ -527,12 +449,6 @@ struct btrfs_ioctl_quota_ctl_args {
|
|||
#define MS_PRIVATE (1 << 18)
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_GETTID
|
||||
static inline pid_t gettid(void) {
|
||||
return (pid_t) syscall(SYS_gettid);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef SCM_SECURITY
|
||||
#define SCM_SECURITY 0x03
|
||||
#endif
|
||||
|
|
@ -561,32 +477,6 @@ static inline pid_t gettid(void) {
|
|||
#define MAX_HANDLE_SZ 128
|
||||
#endif
|
||||
|
||||
#ifndef __NR_name_to_handle_at
|
||||
# if defined(__x86_64__)
|
||||
# define __NR_name_to_handle_at 303
|
||||
# elif defined(__i386__)
|
||||
# define __NR_name_to_handle_at 341
|
||||
# elif defined(__arm__)
|
||||
# define __NR_name_to_handle_at 370
|
||||
# elif defined(__powerpc__)
|
||||
# define __NR_name_to_handle_at 345
|
||||
# else
|
||||
# error "__NR_name_to_handle_at is not defined"
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_NAME_TO_HANDLE_AT
|
||||
struct file_handle {
|
||||
unsigned int handle_bytes;
|
||||
int handle_type;
|
||||
unsigned char f_handle[0];
|
||||
};
|
||||
|
||||
static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
|
||||
return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_SECURE_GETENV
|
||||
# ifdef HAVE___SECURE_GETENV
|
||||
# define secure_getenv __secure_getenv
|
||||
|
|
@ -635,22 +525,6 @@ static inline int name_to_handle_at(int fd, const char *name, struct file_handle
|
|||
|
||||
#endif
|
||||
|
||||
#ifndef __NR_setns
|
||||
# if defined(__x86_64__)
|
||||
# define __NR_setns 308
|
||||
# elif defined(__i386__)
|
||||
# define __NR_setns 346
|
||||
# else
|
||||
# error "__NR_setns is not defined"
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_SETNS
|
||||
static inline int setns(int fd, int nstype) {
|
||||
return syscall(__NR_setns, fd, nstype);
|
||||
}
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_LO_FLAGS_PARTSCAN
|
||||
#define LO_FLAGS_PARTSCAN 8
|
||||
#endif
|
||||
|
|
@ -1018,69 +892,10 @@ static inline int setns(int fd, int nstype) {
|
|||
#define CAP_AUDIT_READ 37
|
||||
#endif
|
||||
|
||||
static inline int raw_clone(unsigned long flags, void *child_stack) {
|
||||
#if defined(__s390__) || defined(__CRIS__)
|
||||
/* On s390 and cris the order of the first and second arguments
|
||||
* of the raw clone() system call is reversed. */
|
||||
return (int) syscall(__NR_clone, child_stack, flags);
|
||||
#else
|
||||
return (int) syscall(__NR_clone, flags, child_stack);
|
||||
#endif
|
||||
}
|
||||
|
||||
static inline pid_t raw_getpid(void) {
|
||||
#if defined(__alpha__)
|
||||
return (pid_t) syscall(__NR_getxpid);
|
||||
#else
|
||||
return (pid_t) syscall(__NR_getpid);
|
||||
#endif
|
||||
}
|
||||
|
||||
#if !HAVE_DECL_RENAMEAT2
|
||||
|
||||
#ifndef __NR_renameat2
|
||||
# if defined __x86_64__
|
||||
# define __NR_renameat2 316
|
||||
# elif defined __arm__
|
||||
# define __NR_renameat2 382
|
||||
# elif defined _MIPS_SIM
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI32
|
||||
# define __NR_renameat2 4351
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_NABI32
|
||||
# define __NR_renameat2 6315
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI64
|
||||
# define __NR_renameat2 5311
|
||||
# endif
|
||||
# elif defined __i386__
|
||||
# define __NR_renameat2 353
|
||||
# else
|
||||
# warning "__NR_renameat2 unknown for your architecture"
|
||||
# define __NR_renameat2 0xffffffff
|
||||
# endif
|
||||
#endif
|
||||
|
||||
static inline int renameat2(int oldfd, const char *oldname, int newfd, const char *newname, unsigned flags) {
|
||||
return syscall(__NR_renameat2, oldfd, oldname, newfd, newname, flags);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef RENAME_NOREPLACE
|
||||
#define RENAME_NOREPLACE (1 << 0)
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_KCMP
|
||||
static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
|
||||
#if defined(__NR_kcmp)
|
||||
return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
|
||||
#else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef KCMP_FILE
|
||||
#define KCMP_FILE 0
|
||||
#endif
|
||||
|
|
@ -1097,35 +912,6 @@ static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, uns
|
|||
typedef int32_t key_serial_t;
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_KEYCTL
|
||||
static inline long keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4,unsigned long arg5) {
|
||||
#if defined(__NR_keyctl)
|
||||
return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
|
||||
#else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
#endif
|
||||
}
|
||||
|
||||
static inline key_serial_t add_key(const char *type, const char *description, const void *payload, size_t plen, key_serial_t ringid) {
|
||||
#if defined (__NR_add_key)
|
||||
return syscall(__NR_add_key, type, description, payload, plen, ringid);
|
||||
#else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
#endif
|
||||
}
|
||||
|
||||
static inline key_serial_t request_key(const char *type, const char *description, const char * callout_info, key_serial_t destringid) {
|
||||
#if defined (__NR_request_key)
|
||||
return syscall(__NR_request_key, type, description, callout_info, destringid);
|
||||
#else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef KEYCTL_READ
|
||||
#define KEYCTL_READ 11
|
||||
#endif
|
||||
|
|
@ -1178,32 +964,4 @@ static inline key_serial_t request_key(const char *type, const char *description
|
|||
|
||||
#endif
|
||||
|
||||
#ifndef __NR_copy_file_range
|
||||
# if defined(__x86_64__)
|
||||
# define __NR_copy_file_range 326
|
||||
# elif defined(__i386__)
|
||||
# define __NR_copy_file_range 377
|
||||
# elif defined __s390__
|
||||
# define __NR_copy_file_range 375
|
||||
# elif defined __arm__
|
||||
# define __NR_copy_file_range 391
|
||||
# elif defined __aarch64__
|
||||
# define __NR_copy_file_range 285
|
||||
# else
|
||||
# warning "__NR_copy_file_range not defined for your architecture"
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if !HAVE_DECL_COPY_FILE_RANGE
|
||||
static inline ssize_t copy_file_range(int fd_in, loff_t *off_in,
|
||||
int fd_out, loff_t *off_out,
|
||||
size_t len,
|
||||
unsigned int flags) {
|
||||
#ifdef __NR_copy_file_range
|
||||
return syscall(__NR_copy_file_range, fd_in, off_in, fd_out, off_out, len, flags);
|
||||
#else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
#include "missing_syscall.h"
|
||||
|
|
|
|||
310
src/basic/missing_syscall.h
Normal file
310
src/basic/missing_syscall.h
Normal file
|
|
@ -0,0 +1,310 @@
|
|||
#pragma once
|
||||
|
||||
/***
|
||||
This file is part of systemd.
|
||||
|
||||
Copyright 2010 Lennart Poettering
|
||||
Copyright 2016 Zbigniew Jędrzejewski-Szmek
|
||||
|
||||
systemd is free software; you can redistribute it and/or modify it
|
||||
under the terms of the GNU Lesser General Public License as published by
|
||||
the Free Software Foundation; either version 2.1 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
systemd is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public License
|
||||
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
||||
***/
|
||||
|
||||
/* Missing glibc definitions to access certain kernel APIs */
|
||||
|
||||
#if !HAVE_DECL_PIVOT_ROOT
|
||||
static inline int pivot_root(const char *new_root, const char *put_old) {
|
||||
return syscall(SYS_pivot_root, new_root, put_old);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
#if !HAVE_DECL_MEMFD_CREATE
|
||||
# ifndef __NR_memfd_create
|
||||
# if defined __x86_64__
|
||||
# define __NR_memfd_create 319
|
||||
# elif defined __arm__
|
||||
# define __NR_memfd_create 385
|
||||
# elif defined __aarch64__
|
||||
# define __NR_memfd_create 279
|
||||
# elif defined __s390__
|
||||
# define __NR_memfd_create 350
|
||||
# elif defined _MIPS_SIM
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI32
|
||||
# define __NR_memfd_create 4354
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_NABI32
|
||||
# define __NR_memfd_create 6318
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI64
|
||||
# define __NR_memfd_create 5314
|
||||
# endif
|
||||
# elif defined __i386__
|
||||
# define __NR_memfd_create 356
|
||||
# else
|
||||
# warning "__NR_memfd_create unknown for your architecture"
|
||||
# endif
|
||||
# endif
|
||||
|
||||
static inline int memfd_create(const char *name, unsigned int flags) {
|
||||
# ifdef __NR_memfd_create
|
||||
return syscall(__NR_memfd_create, name, flags);
|
||||
# else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
#if !HAVE_DECL_GETRANDOM
|
||||
# ifndef __NR_getrandom
|
||||
# if defined __x86_64__
|
||||
# define __NR_getrandom 318
|
||||
# elif defined(__i386__)
|
||||
# define __NR_getrandom 355
|
||||
# elif defined(__arm__)
|
||||
# define __NR_getrandom 384
|
||||
# elif defined(__aarch64__)
|
||||
# define __NR_getrandom 278
|
||||
# elif defined(__ia64__)
|
||||
# define __NR_getrandom 1339
|
||||
# elif defined(__m68k__)
|
||||
# define __NR_getrandom 352
|
||||
# elif defined(__s390x__)
|
||||
# define __NR_getrandom 349
|
||||
# elif defined(__powerpc__)
|
||||
# define __NR_getrandom 359
|
||||
# elif defined _MIPS_SIM
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI32
|
||||
# define __NR_getrandom 4353
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_NABI32
|
||||
# define __NR_getrandom 6317
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI64
|
||||
# define __NR_getrandom 5313
|
||||
# endif
|
||||
# else
|
||||
# warning "__NR_getrandom unknown for your architecture"
|
||||
# endif
|
||||
# endif
|
||||
|
||||
static inline int getrandom(void *buffer, size_t count, unsigned flags) {
|
||||
# ifdef __NR_getrandom
|
||||
return syscall(__NR_getrandom, buffer, count, flags);
|
||||
# else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
#if !HAVE_DECL_GETTID
|
||||
static inline pid_t gettid(void) {
|
||||
return (pid_t) syscall(SYS_gettid);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
#if !HAVE_DECL_NAME_TO_HANDLE_AT
|
||||
# ifndef __NR_name_to_handle_at
|
||||
# if defined(__x86_64__)
|
||||
# define __NR_name_to_handle_at 303
|
||||
# elif defined(__i386__)
|
||||
# define __NR_name_to_handle_at 341
|
||||
# elif defined(__arm__)
|
||||
# define __NR_name_to_handle_at 370
|
||||
# elif defined(__powerpc__)
|
||||
# define __NR_name_to_handle_at 345
|
||||
# else
|
||||
# error "__NR_name_to_handle_at is not defined"
|
||||
# endif
|
||||
# endif
|
||||
|
||||
struct file_handle {
|
||||
unsigned int handle_bytes;
|
||||
int handle_type;
|
||||
unsigned char f_handle[0];
|
||||
};
|
||||
|
||||
static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
|
||||
# ifdef __NR_name_to_handle_at
|
||||
return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
|
||||
# else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
#if !HAVE_DECL_SETNS
|
||||
# ifndef __NR_setns
|
||||
# if defined(__x86_64__)
|
||||
# define __NR_setns 308
|
||||
# elif defined(__i386__)
|
||||
# define __NR_setns 346
|
||||
# else
|
||||
# error "__NR_setns is not defined"
|
||||
# endif
|
||||
# endif
|
||||
|
||||
static inline int setns(int fd, int nstype) {
|
||||
# ifdef __NR_setns
|
||||
return syscall(__NR_setns, fd, nstype);
|
||||
# else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
static inline int raw_clone(unsigned long flags, void *child_stack) {
|
||||
#if defined(__s390__) || defined(__CRIS__)
|
||||
/* On s390 and cris the order of the first and second arguments
|
||||
* of the raw clone() system call is reversed. */
|
||||
return (int) syscall(__NR_clone, child_stack, flags);
|
||||
#else
|
||||
return (int) syscall(__NR_clone, flags, child_stack);
|
||||
#endif
|
||||
}
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
static inline pid_t raw_getpid(void) {
|
||||
#if defined(__alpha__)
|
||||
return (pid_t) syscall(__NR_getxpid);
|
||||
#else
|
||||
return (pid_t) syscall(__NR_getpid);
|
||||
#endif
|
||||
}
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
#if !HAVE_DECL_RENAMEAT2
|
||||
# ifndef __NR_renameat2
|
||||
# if defined __x86_64__
|
||||
# define __NR_renameat2 316
|
||||
# elif defined __arm__
|
||||
# define __NR_renameat2 382
|
||||
# elif defined _MIPS_SIM
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI32
|
||||
# define __NR_renameat2 4351
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_NABI32
|
||||
# define __NR_renameat2 6315
|
||||
# endif
|
||||
# if _MIPS_SIM == _MIPS_SIM_ABI64
|
||||
# define __NR_renameat2 5311
|
||||
# endif
|
||||
# elif defined __i386__
|
||||
# define __NR_renameat2 353
|
||||
# else
|
||||
# warning "__NR_renameat2 unknown for your architecture"
|
||||
# endif
|
||||
# endif
|
||||
|
||||
static inline int renameat2(int oldfd, const char *oldname, int newfd, const char *newname, unsigned flags) {
|
||||
# ifdef __NR_renameat2
|
||||
return syscall(__NR_renameat2, oldfd, oldname, newfd, newname, flags);
|
||||
# else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
#if !HAVE_DECL_KCMP
|
||||
static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
|
||||
# ifdef __NR_kcmp
|
||||
return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
|
||||
# else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
#if !HAVE_DECL_KEYCTL
|
||||
static inline long keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4,unsigned long arg5) {
|
||||
# ifdef __NR_keyctl
|
||||
return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
|
||||
# else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
|
||||
static inline key_serial_t add_key(const char *type, const char *description, const void *payload, size_t plen, key_serial_t ringid) {
|
||||
# ifdef __NR_add_key
|
||||
return syscall(__NR_add_key, type, description, payload, plen, ringid);
|
||||
# else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
|
||||
static inline key_serial_t request_key(const char *type, const char *description, const char * callout_info, key_serial_t destringid) {
|
||||
# ifdef __NR_request_key
|
||||
return syscall(__NR_request_key, type, description, callout_info, destringid);
|
||||
# else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
|
||||
/* ======================================================================= */
|
||||
|
||||
#if !HAVE_DECL_COPY_FILE_RANGE
|
||||
# ifndef __NR_copy_file_range
|
||||
# if defined(__x86_64__)
|
||||
# define __NR_copy_file_range 326
|
||||
# elif defined(__i386__)
|
||||
# define __NR_copy_file_range 377
|
||||
# elif defined __s390__
|
||||
# define __NR_copy_file_range 375
|
||||
# elif defined __arm__
|
||||
# define __NR_copy_file_range 391
|
||||
# elif defined __aarch64__
|
||||
# define __NR_copy_file_range 285
|
||||
# else
|
||||
# warning "__NR_copy_file_range not defined for your architecture"
|
||||
# endif
|
||||
# endif
|
||||
|
||||
static inline ssize_t copy_file_range(int fd_in, loff_t *off_in,
|
||||
int fd_out, loff_t *off_out,
|
||||
size_t len,
|
||||
unsigned int flags) {
|
||||
# ifdef __NR_copy_file_range
|
||||
return syscall(__NR_copy_file_range, fd_in, off_in, fd_out, off_out, len, flags);
|
||||
# else
|
||||
errno = ENOSYS;
|
||||
return -1;
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
Loading…
Reference in a new issue