/* Scheme48/scsh Unix system interface.
** Routines that require custom C support.
** Copyright (c) 1993,1994 by Olin Shivers.
*/
#include "sysdep.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/signal.h>
#include <sys/types.h>
#include <sys/times.h>
#include <sys/time.h>
#include <fcntl.h> /* for O_RDWR */
#include <sys/stat.h>
#include <sys/param.h> /* For gethostname() */
#include <netdb.h>
/* This lossage brought to you by Solaris and BIND */
/* We thank Solaris for forcing users to get a new BIND */
/* We thank BIND for blowing away the Solaris includea for MAXHOSTNAMELEN */
#ifndef MAXHOSTNAMELEN
#include <arpa/nameser.h>
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN MAXDNAME
#endif
#endif
#include <pwd.h>
#include <errno.h>
#include <sys/wait.h>
#include <unistd.h>
#include <string.h>
#include <utime.h>
#ifdef HAVE_CRYPT_H
#include <crypt.h>
#endif
#include <syslog.h>
#include "cstuff.h"
#include "machine/stdio_dep.h"
/* Make sure our exports match up w/the implementation: */
#include "syscalls1.h"
extern int errno;
extern char **environ;
/* Sux because it's dependent on 32-bitness. */
#define hi8(i) (((i)>>24) & 0xff)
#define lo24(i) ((i) & 0xffffff)
#define comp8_24(hi, lo) (((hi)<<24) + (lo))
/* Process stuff
*******************************************************************************
** wait, exec
*/
/* Args: pid, flags; returns [retval, status] */
s48_value wait_pid(s48_value s48_pid, s48_value s48_flags)
{
int status=0;
pid_t pid = (pid_t) s48_extract_integer (s48_pid);
int flags = s48_extract_integer (s48_flags);
pid_t result_pid;
result_pid = waitpid(pid, &status, flags);
return s48_cons ((result_pid == -1) ? s48_enter_fixnum(errno) : S48_FALSE,
s48_cons (s48_enter_integer (result_pid),
s48_cons (s48_enter_integer (status),
S48_NULL)));
}
/* env: Scheme vector of Scheme strings, e.g., #("TERM=vt100" ...) or #T.
** argv: Scheme vector of Scheme strings.
** prog: String.
**
** We don't typecheck the args. You must do the typechecking
** on the Scheme side.
*/
s48_value scheme_exec(s48_value prog, s48_value argv, s48_value env)
{
int i, j, e;
int argc = S48_VECTOR_LENGTH(argv);
char **unix_argv = Malloc(char*, argc+1);
char **unix_env;
if( unix_argv == NULL ) s48_raise_os_error_3(errno, prog, argv, env);
/* Scheme->Unix convert the argv parameter. */
for(i=0; i<argc; i++)
unix_argv[i] = s48_extract_string(S48_VECTOR_REF(argv,i));
unix_argv[argc] = NULL;
/* Scheme->Unix convert the env parameter. */
if( env == S48_TRUE ) unix_env = environ;
else {
int envlen = S48_VECTOR_LENGTH(env);
unix_env = Malloc(char*, envlen+1);
if( !unix_env ){
Free(unix_argv);
s48_raise_os_error_3(errno, prog, argv, env);
}
for(j=0; j<envlen; j++)
unix_env[j] = s48_extract_string(S48_VECTOR_REF(env,j));
unix_env[envlen] = NULL;
}
execve(s48_extract_string (prog), unix_argv, unix_env); /* Do it. */
if( env != S48_TRUE ) {
e = errno;
Free(unix_env);
errno = e;
}
e = errno;
Free(unix_argv);
errno = e;
return s48_enter_fixnum(errno); // Don't raise an exception since
// we're maybe just testing the path
}
s48_value scsh_exit(s48_value status)
{
exit(s48_extract_fixnum(status));
return S48_FALSE;
}
s48_value scsh__exit(s48_value status)
{
_exit(s48_extract_fixnum(status));
return S48_FALSE;
}
s48_value scsh_fork()
{
pid_t pid = fork();
if (pid == -1)
s48_raise_os_error(errno);
else return s48_enter_fixnum (pid);
}
/* Random file and I/O stuff
*******************************************************************************
*/
/* Returns (r w) */
s48_value scheme_pipe()
{
int fds[2];
if(pipe(fds) == -1)
s48_raise_os_error(errno);
else
return s48_cons (s48_enter_fixnum (fds[0]),
s48_cons (s48_enter_fixnum (fds [1]),
S48_NULL));
}
s48_value scsh_kill (s48_value pid, s48_value signal)
{
int ret = kill ((pid_t) s48_extract_fixnum (pid),
s48_extract_fixnum (signal));
if (ret == -1)
s48_raise_os_error_2(errno, pid, signal);
else return s48_enter_fixnum (ret);
}
/* Read the symlink. */
s48_value scm_readlink(s48_value path)
{
char linkpath[MAXPATHLEN+1];
int retval = readlink(s48_extract_string (path), linkpath, MAXPATHLEN);
if (retval == -1)
s48_raise_os_error_1(errno, path);
else
{
linkpath[retval] = '\0';
return s48_enter_string(linkpath);
}
}
/* Scheme interfaces to utime().
** Complicated by need to pass real 32-bit quantities.
*/
int scm_utime(char const *path, time_t ac, time_t mod)
{
struct utimbuf t;
t.actime = ac;
t.modtime = mod;
return utime(path, &t);
}
int scm_utime_now(char const *path) {return utime(path, 0);}
s48_value set_cloexec(s48_value _fd, s48_value _val)
{
int fd = s48_extract_fixnum (_fd);
int val = (_val == S48_TRUE) ? 1 : 0;
int flags = fcntl(fd, F_GETFD);
if( flags == -1 ) s48_raise_os_error_2(errno, _fd, _val);
val = -val; /* 0 -> 0 and 1 -> -1 */
/* If it's already what we want, just return. */
if( (flags & FD_CLOEXEC) == (FD_CLOEXEC & val) ) return S48_FALSE;
flags = (flags & ~FD_CLOEXEC) | (val & FD_CLOEXEC);
if (fcntl(fd, F_SETFD, flags) == -1)
s48_raise_os_error_2(errno, _fd, _val);
else return S48_FALSE;
}
s48_value scsh_chdir(s48_value directory){
int retval = chdir (s48_extract_string (directory));
if (retval == -1)
s48_raise_os_error_1(errno, directory);
return S48_TRUE;
}
/* Two versions of CWD
*******************************************************************************
*/
/* Posix rules: If PATH_MAX is defined, it's the length of longest path.
** Otherwise, _POSIX_PATH_MAX = 255, and is a lower bound on said length.
** I'm writing out 255 as a literal because HP-UX isn't finding
** _POSIX_PATH_MAX.
*/
#ifdef PATH_MAX
#define scsh_path_max (PATH_MAX)
#else
#define scsh_path_max (255)
#endif
/* Simple-minded POSIX version. */
s48_value scheme_cwd()
{
char *buf;
int size = scsh_path_max + 1; /* +1 for terminating nul byte... */
buf = Malloc(char,size);
if(!buf) goto lose;
while( !getcwd(buf, size) )
if( errno != ERANGE ) goto lose;
else {
/* Double the buf and retry. */
char *nbuf = Realloc(char, buf, size += size);
if( !nbuf ) goto lose;
buf = nbuf;
}
return s48_enter_string(buf); /* win */
lose:
{int e = errno;
Free(buf);
errno = e,
s48_raise_os_error(errno);}
}
/* Process times
*******************************************************************************
*/
/* Sleazing on the types here -- the ret values should be clock_t, not int,
** but cig can't handle it.
*/
int process_times(clock_t *utime, clock_t *stime,
clock_t *cutime, clock_t *cstime)
{
struct tms tms;
clock_t t = times(&tms);
if (t == -1) return -1;
*utime = tms.tms_utime;
*stime = tms.tms_stime;
*cutime = tms.tms_cutime;
*cstime = tms.tms_cstime;
return t;
}
int cpu_clock_ticks_per_sec()
{
#ifdef _SC_CLK_TCK
static long clock_tick = 0;
if (clock_tick == 0)
clock_tick = sysconf(_SC_CLK_TCK); /* POSIX.1, POSIX.2 */
return clock_tick;
#else
#ifdef CLK_TCK
return CLK_TCK;
#else
return 60;
#endif
#endif
}
/* Reading and writing
*******************************************************************************
*/
/* Return a char, #f (EOF), or errno. */
s48_value read_fdes_char(int fd)
{
int i; char c;
if( (i=read(fd, &c, 1)) < 0 ) return s48_enter_fixnum(errno);
if(i==0) return S48_FALSE;
return s48_enter_char(c);
}
int write_fdes_char(char c, int fd) {return write(fd, &c, 1);}
ssize_t read_fdes_substring(s48_value buf, size_t start, size_t end, int fd)
{
return read(fd, StrByte(buf,start), end-start);
}
ssize_t write_fdes_substring(s48_value buf, size_t start, size_t end, int fd)
{
return write(fd, StrByte(buf,start), end-start);
}
/* S_ISSOCK(mode) and S_ISLNK(mode) are not POSIX. You lose on a NeXT. Ugh. */
#ifndef S_ISSOCK
#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
#endif
#ifndef S_ISLNK
#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
#endif
#define low24(x) ((x) & 0xffffff)
#define hi_but24(x) (((x) >> 24) & 0xff)
/* Note that hi_but24 assumes value is a *32 bit* signed value. We have to
** do this, because C's right-shift operator exposes word width. A suckful
** language.
*/
/* Internal aux function -- loads stat values into Scheme vector: */
s48_value really_stat(struct stat *s, s48_value vec)
{
int modes, typecode = -1;
S48_DECLARE_GC_PROTECT(1);
S48_GC_PROTECT_1(vec);
modes = s->st_mode;
if( S_ISBLK(modes) ) typecode = 0;
else if( S_ISCHR(modes) ) typecode = 1;
else if( S_ISDIR(modes) ) typecode = 2;
else if( S_ISFIFO(modes) ) typecode = 3;
else if( S_ISREG(modes) ) typecode = 4;
else if( S_ISSOCK(modes) ) typecode = 5;
else if( S_ISLNK(modes) ) typecode = 6;
S48_VECTOR_SET(vec,0,s48_enter_fixnum(typecode));
S48_VECTOR_SET(vec,1, s48_enter_integer(s->st_dev));
S48_VECTOR_SET(vec,2, s48_enter_integer(s->st_ino));
S48_VECTOR_SET(vec,3, s48_enter_integer(s->st_mode));
S48_VECTOR_SET(vec,4, s48_enter_integer(s->st_nlink));
S48_VECTOR_SET(vec,5, s48_enter_integer(s->st_uid));
S48_VECTOR_SET(vec,6, s48_enter_integer(s->st_gid));
S48_VECTOR_SET(vec,7, s48_enter_integer(s->st_size));
S48_VECTOR_SET(vec,8, s48_enter_integer(s->st_atime));
S48_VECTOR_SET(vec,9, s48_enter_integer(s->st_mtime));
S48_VECTOR_SET(vec,10, s48_enter_integer(s->st_ctime));
/* We also used to do st_rdev, st_blksize, and st_blocks.
These aren't POSIX, and, e.g., are not around on SGI machines.
Too bad -- blksize is useful. Unix sux. */
S48_GC_UNPROTECT();
return S48_UNSPECIFIC;
}
s48_value scheme_stat(s48_value path, s48_value vec, s48_value chase_p)
{
struct stat s;
const char * cp_path = s48_extract_string(path);
int retval = (chase_p != S48_FALSE) ? stat(cp_path, &s) : lstat(cp_path, &s);
if (retval == -1) s48_raise_os_error_2 (errno, path, chase_p);
return really_stat (&s, vec);
}
s48_value scheme_fstat(s48_value fd, s48_value vec)
{
struct stat s;
int retval = fstat (s48_extract_fixnum (fd), &s);
if (retval == -1) s48_raise_os_error_1 (errno, fd);
return really_stat (&s, vec);
}
/* Supplementary groups access
*******************************************************************************
*/
s48_value scsh_getgid()
{
return s48_enter_integer(getgid());
}
s48_value scsh_getegid()
{
return s48_enter_integer(getegid());
}
s48_value scsh_setgid(s48_value gid)
{
int retval = setgid (s48_extract_integer (gid));
if (retval == -1)
s48_raise_os_error_1(errno, gid);
return S48_UNSPECIFIC;
}
s48_value scsh_setegid(s48_value gid)
{
int retval = setegid (s48_extract_integer (gid));
if (retval == -1)
s48_raise_os_error_1(errno, gid);
return S48_UNSPECIFIC;
}
/* Load the supplementary groups into a list */
s48_value get_groups()
{
int retval;
int veclen = getgroups(0,NULL);
int i = veclen;
s48_value l = S48_NULL;
gid_t gvec0[20], *gp = gvec0;
if( veclen > 20 )
if (NULL == (gp=Malloc(gid_t,veclen))) s48_raise_os_error(errno);
retval = getgroups(veclen, gp);
if (retval == -1){
if (veclen > 20) Free(gp);
s48_raise_os_error(errno);
}
else if (retval != veclen){ // paranoia...
get_groups();
}
else{
while (i > 0){
l = s48_cons(s48_enter_integer(gp[--i]), l);
}
if (veclen > 20) Free(gp);
return l;
}
}
s48_value scsh_getuid()
{
return s48_enter_integer(getuid());
}
s48_value scsh_geteuid()
{
return s48_enter_integer(geteuid());
}
s48_value scsh_setuid(s48_value uid)
{
int retval = setuid (s48_extract_integer (uid));
if (retval == -1)
s48_raise_os_error_1(errno, uid);
return S48_UNSPECIFIC;
}
s48_value scsh_seteuid(s48_value uid)
{
int retval = seteuid (s48_extract_integer (uid));
if (retval == -1)
s48_raise_os_error_1(errno, uid);
return S48_UNSPECIFIC;
}
/* Environment hackery
*******************************************************************************
*/
struct envvec {
char **env; /* Null-terminated vector of strings. Malloc'd. */
int size; /* Length of env. */
int revealed; /* True => exported to C code */
int gcable; /* True => no pointers to us from Scheme heap. */
};
/* Note that the SIZE field tells you how many words of memory are allocated
** for the block of memory to which the ENV field points. This includes the
** terminating null pointer, and may include more words beyond that. It is
** *not* the number of strings stored in ENV; it is always greater than this
** value.
**
** The REVEALED field is incremented if either the ENV block or the entire
** struct is handed out to C code.
**
** If the structure becomes gc'able, but is REVEALED (hence cannot be freed),
** the GC simply sets GCABLE and forgets about it.
*/
/* The envvec corresponding to the current environment.
** Null if the current environment has no corresponding envvec struct
** (which should only be true of the initial environment at process
** startup time.) That is,
** !current_env || current_env->env == environ
*/
struct envvec *current_env = 0;
void align_env(s48_value pointer_to_struct)
{
struct envvec* thread_env;
thread_env = (struct envvec*) s48_extract_integer(pointer_to_struct);
environ = thread_env->env;
current_env = thread_env;
}
s48_value free_envvec (s48_value pointer_to_struct)
{
struct envvec* envv = (struct envvec*) s48_extract_integer(pointer_to_struct);
int i;
if (envv->revealed)
{
envv->gcable = 1;
return S48_FALSE;
}
for (i=0; i<envv->size; i++)
Free(envv->env[i]);
Free(envv->env);
Free(envv);
return S48_TRUE;
}
s48_value envvec_setenv(s48_value scheme_name, s48_value entry){
char * name = s48_extract_string(scheme_name);
int namelen = strlen(name);
char **ptr = environ;
char ** newenv;
int size;
int number_of_entries = 0;
char * newentry = Malloc(char, S48_STRING_LENGTH(entry) + 1);
if ( !newentry) return s48_enter_fixnum(errno);
if (!current_env) {
fprintf(stderr, "no current_env, giving up" );
exit (1);
}
size = current_env->size;
while (*ptr){
if ( ( strncmp(*ptr, name, namelen) == 0) && (*ptr)[namelen] == '=')
{
*ptr = strcpy(newentry,s48_extract_string(entry));
return S48_FALSE;
}
ptr++;
number_of_entries++;
}
if (number_of_entries >= size) { // I never had this problem, but...
fprintf(stderr, "currupt env, giving up %d %d", number_of_entries,size);
exit (1);
}
else if (number_of_entries < (size - 1)) // is space left after the NULL ?
{
*ptr = strcpy(newentry,s48_extract_string(entry));
*++ptr = NULL;
return S48_FALSE;
}
else // number_of_entries == (size - 1)
{
int newsize = size + 1; // TODO: add more
char ** newenv = Malloc (char *, newsize);
if( !newenv) return s48_enter_fixnum(errno);
current_env->env = newenv;
current_env->size = newsize;
memcpy(newenv, environ, number_of_entries * sizeof (char *));
newenv[number_of_entries] = strcpy(newentry, s48_extract_string(entry));
newenv[number_of_entries + 1] = NULL;
environ = newenv;
return S48_FALSE;
}
}
s48_value scm_envvec(){
return char_pp_2_string_list(environ);
}
/* Load the (Scheme) strings in the (Scheme) vector VEC into environ.
** Somewhat wasteful of memory: we do not free any of the memory
** in the old environ -- don't know if it is being shared elsewhere.
*/
int install_env(s48_value vec)
{
int i, envsize;
char **newenv;
envsize = S48_VECTOR_LENGTH(vec);
if (envsize >= (current_env->size))
{
newenv = Malloc(char*, envsize+1);
if( !newenv ) return errno;
Free(current_env->env);
current_env->env = newenv;
}
else newenv = current_env->env;
for( i=0; i<envsize; i++ ) {
char *s = scheme2c_strcpy(S48_VECTOR_REF(vec,i));
if (!s) {
/* Return all the memory and bail out. */
int e = errno;
while(--i) Free(newenv[i]);
Free(newenv);
return e;
}
newenv[i] = s;
}
newenv[i] = NULL;
environ = newenv;
return 0;
}
int create_env(s48_value vec, s48_value * envvec_addr)
{
int i, envsize;
char **newenv;
struct envvec* thread_env;
envsize = S48_VECTOR_LENGTH(vec);
newenv = Malloc(char*, envsize+1);
if( !newenv ) return errno;
thread_env = Malloc (struct envvec, 4); // TODO: why 4 ??
if( !thread_env ) {
Free (newenv);
return errno;
}
thread_env->env = newenv;
thread_env->size = envsize + 1;
thread_env->revealed = 0;
thread_env->gcable = 0;
for( i=0; i<envsize; i++ ) {
char *s = scheme2c_strcpy(S48_VECTOR_REF(vec,i));
if (!s) {
/* Return all the memory and bail out. */
int e = errno;
while(--i) Free(newenv[i]);
Free(newenv);
Free(thread_env);
return e;
}
newenv[i] = s;
}
newenv[envsize] = NULL;
*envvec_addr = s48_enter_integer((long) thread_env);
return 0;
}
/* Delete the env var. */
s48_value delete_env(s48_value name)
{
int varlen = S48_STRING_LENGTH (name);
char * var = s48_extract_string (name);
char **ptr = environ;
char **ptr2;
if (!current_env) {
fprintf(stderr, "no current_env, giving up" );
exit (1);
}
do if( !*++ptr ) return S48_FALSE;
while( strncmp(*ptr, var, varlen) || (*ptr)[varlen] != '=' );
ptr2 = ptr;
while (*++ptr2);
*ptr = *ptr2;
*ptr2 = NULL;
return S48_TRUE;
}
/*****************************************************************************/
/* N.B.: May be unaligned. */
s48_value scm_gethostname(void)
{
char hostname[MAXHOSTNAMELEN+1];
/* different OS's declare differently, so punt the prototype. */
int gethostname();
int retval = gethostname(hostname, MAXHOSTNAMELEN);
if (retval == -1) s48_raise_os_error(errno);
return s48_enter_string(hostname);
}
#include <errno.h>
char *errno_msg(int i)
{
#ifdef HAVE_STRERROR
return(strerror(i));
#else
/* temp hack until we figure out what to do about losing sys_errlist's */
extern
#ifdef HAVE_CONST_SYS_ERRLIST
const
#endif
char *sys_errlist[];
extern int sys_nerr;
return ( i < 0 || i > sys_nerr ) ? NULL /* i.e., #f */
: (char*) sys_errlist[i];
#endif /* !HAVE_STRERROR */
}
/* Some of fcntl()
******************
*/
s48_value fcntl_read(s48_value fd, s48_value command)
{
int ret = fcntl(s48_extract_fixnum (fd),
s48_extract_integer (command));
if (ret == -1)
s48_raise_os_error_2(errno, fd, command);
else return s48_enter_fixnum (ret);
}
s48_value fcntl_write(s48_value fd, s48_value command, s48_value value)
{
int ret = fcntl(s48_extract_fixnum (fd),
s48_extract_integer (command),
s48_extract_integer (value));
if (ret == -1)
s48_raise_os_error_3(errno, fd, command, value);
else return s48_enter_fixnum (ret);
}
/* crypt()
******************
*/
s48_value scm_crypt(s48_value key, s48_value salt)
{
return s48_enter_string (crypt ( s48_extract_string (key),
s48_extract_string(salt)));
}
/* syslog
*******************
*/
enum scsh_syslog_option {SCSH_LOG_OPTION_DEFAULT,
SCSH_LOG_CONS, SCSH_LOG_NDELAY, SCSH_LOG_PID};
int extract_option(s48_value _option)
{
int option;
switch (s48_extract_fixnum (_option)){
case SCSH_LOG_OPTION_DEFAULT: option = 0; break;
case SCSH_LOG_CONS: option = LOG_CONS; break;
case SCSH_LOG_NDELAY: option = LOG_NDELAY; break;
case SCSH_LOG_PID: option = LOG_PID; break;
default: s48_raise_argtype_error (_option);}
return option;
}
enum scsh_syslog_facility{SCSH_LOG_FACILITY_DEFAULT,
SCSH_LOG_AUTH,
SCSH_LOG_DAEMON,
SCSH_LOG_KERN,
SCSH_LOG_LOCAL0,
SCSH_LOG_LOCAL1,
SCSH_LOG_LOCAL2,
SCSH_LOG_LOCAL3,
SCSH_LOG_LOCAL4,
SCSH_LOG_LOCAL5,
SCSH_LOG_LOCAL6,
SCSH_LOG_LOCAL7,
SCSH_LOG_LPR,
SCSH_LOG_MAIL,
SCSH_LOG_USER};
int extract_facility(s48_value _facility)
{
int facility;
switch (s48_extract_fixnum(_facility)){
case SCSH_LOG_FACILITY_DEFAULT: facility = 0; break;
case SCSH_LOG_AUTH: facility = LOG_AUTH; break;
case SCSH_LOG_DAEMON: facility = LOG_DAEMON; break;
case SCSH_LOG_KERN: facility = LOG_KERN; break;
case SCSH_LOG_LOCAL0: facility = LOG_LOCAL0; break;
case SCSH_LOG_LOCAL1: facility = LOG_LOCAL1; break;
case SCSH_LOG_LOCAL2: facility = LOG_LOCAL2; break;
case SCSH_LOG_LOCAL3: facility = LOG_LOCAL3; break;
case SCSH_LOG_LOCAL4: facility = LOG_LOCAL4; break;
case SCSH_LOG_LOCAL5: facility = LOG_LOCAL5; break;
case SCSH_LOG_LOCAL6: facility = LOG_LOCAL6; break;
case SCSH_LOG_LOCAL7: facility = LOG_LOCAL7; break;
case SCSH_LOG_LPR: facility = LOG_LPR; break;
case SCSH_LOG_MAIL: facility = LOG_MAIL; break;
case SCSH_LOG_USER: facility = LOG_USER; break;
default: s48_raise_argtype_error (_facility);}
return facility;
}
enum scsh_syslog_level{SCSH_LOG_LEVEL_DEFAULT,
SCSH_LOG_EMERG,
SCSH_LOG_ALERT,
SCSH_LOG_CRIT,
SCSH_LOG_ERR,
SCSH_LOG_WARNING,
SCSH_LOG_NOTICE,
SCSH_LOG_INFO,
SCSH_LOG_DEBUG};
int extract_level(s48_value _level)
{
int level;
switch (s48_extract_fixnum (_level)){
case SCSH_LOG_LEVEL_DEFAULT: level = 0; break;
case SCSH_LOG_EMERG: level = LOG_EMERG; break;
case SCSH_LOG_ALERT: level = LOG_ALERT; break;
case SCSH_LOG_CRIT: level = LOG_CRIT; break;
case SCSH_LOG_ERR: level = LOG_ERR; break;
case SCSH_LOG_WARNING: level = LOG_WARNING; break;
case SCSH_LOG_NOTICE: level = LOG_NOTICE; break;
case SCSH_LOG_INFO: level = LOG_INFO; break;
case SCSH_LOG_DEBUG: level = LOG_DEBUG; break;
default: s48_raise_argtype_error (_level);}
return level;
}
s48_value scm_openlog (s48_value _ident, s48_value _option, s48_value _facility)
{
openlog(s48_extract_string(_ident),
extract_option (_option),
extract_facility (_facility));
return S48_UNSPECIFIC;
}
s48_value scm_syslog (s48_value _facility, s48_value _level, s48_value _message)
{
int facility = extract_facility (_facility);
int level = extract_level (_level);
syslog (facility | level, s48_extract_string (_message));
return S48_UNSPECIFIC;
}
s48_value scm_closelog ()
{
closelog();
return S48_UNSPECIFIC;
}