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https://github.com/nginx/nginx.git
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148 lines
3.9 KiB
C
148 lines
3.9 KiB
C
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#include <ngx_freebsd_init.h>
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/* FreeBSD 3.4 at least */
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char ngx_freebsd_kern_ostype[20];
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char ngx_freebsd_kern_osrelease[20];
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int ngx_freebsd_kern_osreldate;
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int ngx_freebsd_hw_ncpu;
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int ngx_freebsd_net_inet_tcp_sendspace;
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int ngx_freebsd_sendfile_nbytes_bug;
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int ngx_freebsd_tcp_nopush_flush;
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/* FreeBSD 5.0 */
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int ngx_freebsd_kern_ipc_zero_copy_send;
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ngx_os_io_t ngx_os_io = {
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ngx_unix_recv,
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ngx_readv_chain,
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NULL,
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ngx_freebsd_sendfile_chain,
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NGX_HAVE_SENDFILE|NGX_HAVE_ZEROCOPY
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};
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typedef struct {
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char *name;
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int *value;
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size_t size;
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} sysctl_t;
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sysctl_t sysctls[] = {
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{"hw.ncpu",
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&ngx_freebsd_hw_ncpu,
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sizeof(int)},
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{"net.inet.tcp.sendspace",
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&ngx_freebsd_net_inet_tcp_sendspace,
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sizeof(int)},
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/* FreeBSD 5.0 */
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{"kern.ipc.zero_copy.send",
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&ngx_freebsd_kern_ipc_zero_copy_send,
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sizeof(int)},
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{NULL, NULL, 0}
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};
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int ngx_os_init(ngx_log_t *log)
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{
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int i, version;
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size_t size;
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ngx_err_t err;
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size = 20;
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if (sysctlbyname("kern.ostype",
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ngx_freebsd_kern_ostype, &size, NULL, 0) == -1) {
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ngx_log_error(NGX_LOG_ALERT, log, errno,
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"sysctlbyname(kern.ostype) failed");
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return NGX_ERROR;
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}
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size = 20;
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if (sysctlbyname("kern.osrelease",
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ngx_freebsd_kern_osrelease, &size, NULL, 0) == -1) {
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ngx_log_error(NGX_LOG_ALERT, log, errno,
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"sysctlbyname(kern.osrelease) failed");
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return NGX_ERROR;
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}
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ngx_log_error(NGX_LOG_INFO, log, 0, "OS: %s %s",
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ngx_freebsd_kern_ostype, ngx_freebsd_kern_osrelease);
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size = 4;
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if (sysctlbyname("kern.osreldate",
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&ngx_freebsd_kern_osreldate, &size, NULL, 0) == -1) {
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ngx_log_error(NGX_LOG_ALERT, log, errno,
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"sysctlbyname(kern.osreldate) failed");
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return NGX_ERROR;
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}
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version = ngx_freebsd_kern_osreldate;
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ngx_log_error(NGX_LOG_INFO, log, 0,
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"kern.osreldate: %d, built on %d",
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version, __FreeBSD_version);
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#if (HAVE_FREEBSD_SENDFILE)
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/* The determination of the sendfile() nbytes bug is complex enough.
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There're two sendfile() syscalls: a new 393 has no bug while
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an old 336 has the bug in some versions and has not in others.
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Besides libc_r wrapper also emulates the bug in some versions.
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There's no way to say exactly if a given FreeBSD version has bug.
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Here is the algorithm that works at least for RELEASEs
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and for syscalls only (not libc_r wrapper). */
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/* detect the new sendfile() version available at the compile time
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to allow an old binary to run correctly on an updated FreeBSD system. */
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#if (__FreeBSD__ == 4 && __FreeBSD_version >= 460102) \
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|| __FreeBSD_version == 460002 || __FreeBSD_version >= 500039
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/* a new syscall without the bug */
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ngx_freebsd_sendfile_nbytes_bug = 0;
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#else
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/* an old syscall that can have the bug */
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ngx_freebsd_sendfile_nbytes_bug = 1;
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#endif
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#endif /* HAVE_FREEBSD_SENDFILE */
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if ((version < 500000 && version >= 440003) || version >= 500017) {
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ngx_freebsd_tcp_nopush_flush = 1;
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}
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for (i = 0; sysctls[i].name; i++) {
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*sysctls[i].value = 0;
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size = sysctls[i].size;
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if (sysctlbyname(sysctls[i].name, sysctls[i].value, &size, NULL, 0)
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== -1) {
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err = errno;
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if (err != NGX_ENOENT) {
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ngx_log_error(NGX_LOG_ALERT, log, err,
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"sysctlbyname(%s) failed", sysctls[i].name);
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return NGX_ERROR;
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}
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} else {
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ngx_log_error(NGX_LOG_INFO, log, 0, "%s: %d",
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sysctls[i].name, *sysctls[i].value);
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}
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}
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return ngx_posix_init(log);
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}
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