# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.
have=NGX_LINUX . auto/have_headers
CORE_INCS="$UNIX_INCS"
CORE_DEPS="$UNIX_DEPS $LINUX_DEPS"
CORE_SRCS="$UNIX_SRCS $LINUX_SRCS"
ngx_spacer='
'
cc_aux_flags="$CC_AUX_FLAGS"
CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64"
# Linux kernel version
version=$((`uname -r \
| sed -n -e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/ \
\1*256*256+\2*256+\3/p' \
-e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1*256*256+\2*256/p'`))
version=${version:-0}
# posix_fadvise64() had been implemented in 2.5.60
if [ $version -lt 132412 ]; then
have=NGX_HAVE_POSIX_FADVISE . auto/nohave
fi
# epoll, EPOLLET version
ngx_feature="epoll"
ngx_feature_name="NGX_HAVE_EPOLL"
ngx_feature_run=yes
ngx_feature_incs="#include <sys/epoll.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="int efd = 0;
struct epoll_event ee;
ee.events = EPOLLIN|EPOLLOUT|EPOLLET;
ee.data.ptr = NULL;
(void) ee;
efd = epoll_create(100);
if (efd == -1) return 1;"
. auto/feature
if [ $ngx_found = yes ]; then
have=NGX_HAVE_CLEAR_EVENT . auto/have
CORE_SRCS="$CORE_SRCS $EPOLL_SRCS"
EVENT_MODULES="$EVENT_MODULES $EPOLL_MODULE"
EVENT_FOUND=YES
# EPOLLRDHUP appeared in Linux 2.6.17, glibc 2.8
ngx_feature="EPOLLRDHUP"
ngx_feature_name="NGX_HAVE_EPOLLRDHUP"
ngx_feature_run=no
ngx_feature_incs="#include <sys/epoll.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="int efd = 0, fd = 0;
struct epoll_event ee;
ee.events = EPOLLIN|EPOLLRDHUP|EPOLLET;
ee.data.ptr = NULL;
epoll_ctl(efd, EPOLL_CTL_ADD, fd, &ee)"
. auto/feature
# EPOLLEXCLUSIVE appeared in Linux 4.5, glibc 2.24
ngx_feature="EPOLLEXCLUSIVE"
ngx_feature_name="NGX_HAVE_EPOLLEXCLUSIVE"
ngx_feature_run=no
ngx_feature_incs="#include <sys/epoll.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="int efd = 0, fd = 0;
struct epoll_event ee;
ee.events = EPOLLIN|EPOLLEXCLUSIVE;
ee.data.ptr = NULL;
epoll_ctl(efd, EPOLL_CTL_ADD, fd, &ee)"
. auto/feature
# eventfd()
ngx_feature="eventfd()"
ngx_feature_name="NGX_HAVE_EVENTFD"
ngx_feature_run=no
ngx_feature_incs="#include <sys/eventfd.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="(void) eventfd(0, 0)"
. auto/feature
if [ $ngx_found = yes ]; then
have=NGX_HAVE_SYS_EVENTFD_H . auto/have
fi
if [ $ngx_found = no ]; then
ngx_feature="eventfd() (SYS_eventfd)"
ngx_feature_incs="#include <sys/syscall.h>"
ngx_feature_test="(void) SYS_eventfd"
. auto/feature
fi
fi
# O_PATH and AT_EMPTY_PATH were introduced in 2.6.39, glibc 2.14
ngx_feature="O_PATH"
ngx_feature_name="NGX_HAVE_O_PATH"
ngx_feature_run=no
ngx_feature_incs="#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="int fd; struct stat sb;
fd = openat(AT_FDCWD, \".\", O_PATH|O_DIRECTORY|O_NOFOLLOW);
if (fstatat(fd, \"\", &sb, AT_EMPTY_PATH) != 0) return 1"
. auto/feature
# sendfile()
CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE"
ngx_feature="sendfile()"
ngx_feature_name="NGX_HAVE_SENDFILE"
ngx_feature_run=yes
ngx_feature_incs="#include <sys/sendfile.h>
#include <errno.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="int s = 0, fd = 1;
ssize_t n; off_t off = 0;
n = sendfile(s, fd, &off, 1);
if (n == -1 && errno == ENOSYS) return 1"
. auto/feature
if [ $ngx_found = yes ]; then
CORE_SRCS="$CORE_SRCS $LINUX_SENDFILE_SRCS"
fi
# sendfile64()
CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64"
ngx_feature="sendfile64()"
ngx_feature_name="NGX_HAVE_SENDFILE64"
ngx_feature_run=yes
ngx_feature_incs="#include <sys/sendfile.h>
#include <errno.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="int s = 0, fd = 1;
ssize_t n; off_t off = 0;
n = sendfile(s, fd, &off, 1);
if (n == -1 && errno == ENOSYS) return 1"
. auto/feature
ngx_include="sys/prctl.h"; . auto/include
# prctl(PR_SET_DUMPABLE)
ngx_feature="prctl(PR_SET_DUMPABLE)"
ngx_feature_name="NGX_HAVE_PR_SET_DUMPABLE"
ngx_feature_run=yes
ngx_feature_incs="#include <sys/prctl.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1) return 1"
. auto/feature
# prctl(PR_SET_KEEPCAPS)
ngx_feature="prctl(PR_SET_KEEPCAPS)"
ngx_feature_name="NGX_HAVE_PR_SET_KEEPCAPS"
ngx_feature_run=yes
ngx_feature_incs="#include <sys/prctl.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) == -1) return 1"
. auto/feature
# capabilities
ngx_feature="capabilities"
ngx_feature_name="NGX_HAVE_CAPABILITIES"
ngx_feature_run=no
ngx_feature_incs="#include <linux/capability.h>
#include <sys/syscall.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="struct __user_cap_data_struct data;
struct __user_cap_header_struct header;
header.version = _LINUX_CAPABILITY_VERSION_1;
data.effective = CAP_TO_MASK(CAP_NET_RAW);
data.permitted = 0;
(void) header;
(void) data;
(void) SYS_capset"
. auto/feature
# crypt_r()
ngx_feature="crypt_r()"
ngx_feature_name="NGX_HAVE_GNU_CRYPT_R"
ngx_feature_run=no
ngx_feature_incs="#include <crypt.h>"
ngx_feature_path=
ngx_feature_libs=-lcrypt
ngx_feature_test="struct crypt_data cd;
crypt_r(\"key\", \"salt\", &cd);"
. auto/feature
if [ $ngx_found = yes ]; then
CRYPT_LIB="-lcrypt"
fi
ngx_include="sys/vfs.h"; . auto/include
# BPF sockhash
ngx_feature="BPF sockhash"
ngx_feature_name="NGX_HAVE_BPF"
ngx_feature_run=no
ngx_feature_incs="#include <linux/bpf.h>
#include <sys/syscall.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="union bpf_attr attr = { 0 };
attr.map_flags = 0;
attr.map_type = BPF_MAP_TYPE_SOCKHASH;
syscall(__NR_bpf, 0, &attr, 0);"
. auto/feature
if [ $ngx_found = yes ]; then
CORE_SRCS="$CORE_SRCS src/core/ngx_bpf.c"
CORE_DEPS="$CORE_DEPS src/core/ngx_bpf.h"
if [ $QUIC_BPF != NONE ]; then
QUIC_BPF=YES
fi
fi
ngx_feature="SO_COOKIE"
ngx_feature_name="NGX_HAVE_SO_COOKIE"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>
$NGX_INCLUDE_INTTYPES_H"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="socklen_t optlen = sizeof(uint64_t);
uint64_t cookie;
getsockopt(0, SOL_SOCKET, SO_COOKIE, &cookie, &optlen)"
. auto/feature
if [ $ngx_found = yes ]; then
SO_COOKIE_FOUND=YES
fi
# UDP segmentation offloading
ngx_feature="UDP_SEGMENT"
ngx_feature_name="NGX_HAVE_UDP_SEGMENT"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>
#include <netinet/udp.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="socklen_t optlen = sizeof(int);
int val;
getsockopt(0, SOL_UDP, UDP_SEGMENT, &val, &optlen)"
. auto/feature
CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64"
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