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/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
static ngx_int_t ngx_linux_procfs(char *name, char *buf, size_t len,
ngx_log_t *log);
char ngx_linux_kern_ostype[50];
char ngx_linux_kern_osrelease[20];
int ngx_linux_rtsig_max;
static ngx_os_io_t ngx_linux_io = {
ngx_unix_recv,
ngx_readv_chain,
ngx_unix_send,
#if (NGX_HAVE_SENDFILE)
ngx_linux_sendfile_chain,
NGX_IO_SENDFILE
#else
ngx_writev_chain,
0
#endif
};
ngx_int_t
ngx_os_specific_init(ngx_log_t *log)
{
int name[2];
size_t len;
ngx_err_t err;
if (ngx_linux_procfs("/proc/sys/kernel/ostype",
ngx_linux_kern_ostype,
sizeof(ngx_linux_kern_ostype), log)
== -1)
{
return NGX_ERROR;
}
if (ngx_linux_procfs("/proc/sys/kernel/osrelease",
ngx_linux_kern_osrelease,
sizeof(ngx_linux_kern_osrelease), log)
== -1)
{
return NGX_ERROR;
}
name[0] = CTL_KERN;
name[1] = KERN_RTSIGMAX;
len = sizeof(ngx_linux_rtsig_max);
if (sysctl(name, 2, &ngx_linux_rtsig_max, &len, NULL, 0) == -1) {
err = ngx_errno;
if (err != NGX_ENOTDIR && err != NGX_ENOSYS) {
ngx_log_error(NGX_LOG_ALERT, log, err,
"sysctl(KERN_RTSIGMAX) failed");
return NGX_ERROR;
}
ngx_linux_rtsig_max = 0;
}
ngx_os_io = ngx_linux_io;
return NGX_OK;
}
void
ngx_os_specific_status(ngx_log_t *log)
{
ngx_log_error(NGX_LOG_NOTICE, log, 0, "OS: %s %s",
ngx_linux_kern_ostype, ngx_linux_kern_osrelease);
ngx_log_error(NGX_LOG_NOTICE, log, 0, "sysctl(KERN_RTSIGMAX): %d",
ngx_linux_rtsig_max);
}
static ngx_int_t
ngx_linux_procfs(char *name, char *buf, size_t len, ngx_log_t *log)
{
int n;
ngx_fd_t fd;
fd = open(name, O_RDONLY);
if (fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
"open(\"%s\") failed", name);
return NGX_ERROR;
}
n = read(fd, buf, len);
if (n == -1) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
"read(\"%s\") failed", name);
} else {
if (buf[n - 1] == '\n') {
buf[--n] = '\0';
}
}
ngx_close_file(fd);
return n;
}
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