-/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
*
* This library 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.
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
*/
\f
-#if HAVE_CONFIG_H
+#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
-/* Make GNU/Linux libc declare everything it has. */
-#define _GNU_SOURCE
-
+#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include "libguile/srfi-13.h"
#include "libguile/srfi-14.h"
#include "libguile/vectors.h"
+#include "libguile/values.h"
#include "libguile/lang.h"
#include "libguile/validate.h"
#include <signal.h>
-extern char ** environ;
-
#ifdef HAVE_GRP_H
#include <grp.h>
#endif
# define USE_GNU_LOCALE_API
#endif
+#if (defined USE_GNU_LOCALE_API) && (defined HAVE_XLOCALE_H)
+# include <xlocale.h>
+#endif
+
#if HAVE_CRYPT_H
# include <crypt.h>
#endif
# include <sys/resource.h>
#endif
-#if HAVE_SYS_FILE_H
-# include <sys/file.h>
-#endif
-
-#if HAVE_CRT_EXTERNS_H
-#include <crt_externs.h> /* for Darwin _NSGetEnviron */
-#endif
+#include <sys/file.h> /* from Gnulib */
/* Some Unix systems don't define these. CPP hair is dangerous, but
this seems safe enough... */
-/* On Apple Darwin in a shared library there's no "environ" to access
- directly, instead the address of that variable must be obtained with
- _NSGetEnviron(). */
-#if HAVE__NSGETENVIRON && defined (PIC)
-#define environ (*_NSGetEnviron())
-#endif
-
\f
/* Two often used patterns
size = ngroups * sizeof (GETGROUPS_T);
groups = scm_malloc (size);
- getgroups (ngroups, groups);
+ ngroups = getgroups (ngroups, groups);
result = scm_c_make_vector (ngroups, SCM_BOOL_F);
while (--ngroups >= 0)
#endif /* HAVE_GETGRENT */
+#ifdef HAVE_GETRLIMIT
+#ifdef RLIMIT_AS
+SCM_SYMBOL (sym_as, "as");
+#endif
+#ifdef RLIMIT_CORE
+SCM_SYMBOL (sym_core, "core");
+#endif
+#ifdef RLIMIT_CPU
+SCM_SYMBOL (sym_cpu, "cpu");
+#endif
+#ifdef RLIMIT_DATA
+SCM_SYMBOL (sym_data, "data");
+#endif
+#ifdef RLIMIT_FSIZE
+SCM_SYMBOL (sym_fsize, "fsize");
+#endif
+#ifdef RLIMIT_MEMLOCK
+SCM_SYMBOL (sym_memlock, "memlock");
+#endif
+#ifdef RLIMIT_MSGQUEUE
+SCM_SYMBOL (sym_msgqueue, "msgqueue");
+#endif
+#ifdef RLIMIT_NICE
+SCM_SYMBOL (sym_nice, "nice");
+#endif
+#ifdef RLIMIT_NOFILE
+SCM_SYMBOL (sym_nofile, "nofile");
+#endif
+#ifdef RLIMIT_NPROC
+SCM_SYMBOL (sym_nproc, "nproc");
+#endif
+#ifdef RLIMIT_RSS
+SCM_SYMBOL (sym_rss, "rss");
+#endif
+#ifdef RLIMIT_RTPRIO
+SCM_SYMBOL (sym_rtprio, "rtprio");
+#endif
+#ifdef RLIMIT_RTPRIO
+SCM_SYMBOL (sym_rttime, "rttime");
+#endif
+#ifdef RLIMIT_SIGPENDING
+SCM_SYMBOL (sym_sigpending, "sigpending");
+#endif
+#ifdef RLIMIT_STACK
+SCM_SYMBOL (sym_stack, "stack");
+#endif
+
+static int
+scm_to_resource (SCM s, const char *func, int pos)
+{
+ if (scm_is_number (s))
+ return scm_to_int (s);
+
+ SCM_ASSERT_TYPE (scm_is_symbol (s), s, pos, func, "symbol");
+
+#ifdef RLIMIT_AS
+ if (s == sym_as)
+ return RLIMIT_AS;
+#endif
+#ifdef RLIMIT_CORE
+ if (s == sym_core)
+ return RLIMIT_CORE;
+#endif
+#ifdef RLIMIT_CPU
+ if (s == sym_cpu)
+ return RLIMIT_CPU;
+#endif
+#ifdef RLIMIT_DATA
+ if (s == sym_data)
+ return RLIMIT_DATA;
+#endif
+#ifdef RLIMIT_FSIZE
+ if (s == sym_fsize)
+ return RLIMIT_FSIZE;
+#endif
+#ifdef RLIMIT_MEMLOCK
+ if (s == sym_memlock)
+ return RLIMIT_MEMLOCK;
+#endif
+#ifdef RLIMIT_MSGQUEUE
+ if (s == sym_msgqueue)
+ return RLIMIT_MSGQUEUE;
+#endif
+#ifdef RLIMIT_NICE
+ if (s == sym_nice)
+ return RLIMIT_NICE;
+#endif
+#ifdef RLIMIT_NOFILE
+ if (s == sym_nofile)
+ return RLIMIT_NOFILE;
+#endif
+#ifdef RLIMIT_NPROC
+ if (s == sym_nproc)
+ return RLIMIT_NPROC;
+#endif
+#ifdef RLIMIT_RSS
+ if (s == sym_rss)
+ return RLIMIT_RSS;
+#endif
+#ifdef RLIMIT_RTPRIO
+ if (s == sym_rtprio)
+ return RLIMIT_RTPRIO;
+#endif
+#ifdef RLIMIT_RTPRIO
+ if (s == sym_rttime)
+ return RLIMIT_RTPRIO;
+#endif
+#ifdef RLIMIT_SIGPENDING
+ if (s == sym_sigpending)
+ return RLIMIT_SIGPENDING;
+#endif
+#ifdef RLIMIT_STACK
+ if (s == sym_stack)
+ return RLIMIT_STACK;
+#endif
+
+ scm_misc_error (func, "invalid rlimit resource ~A", scm_list_1 (s));
+ return 0;
+}
+
+SCM_DEFINE (scm_getrlimit, "getrlimit", 1, 0, 0,
+ (SCM resource),
+ "Get a resource limit for this process. @var{resource} identifies the resource,\n"
+ "either as an integer or as a symbol. For example, @code{(getrlimit 'stack)}\n"
+ "gets the limits associated with @code{RLIMIT_STACK}.\n\n"
+ "@code{getrlimit} returns two values, the soft and the hard limit. If no\n"
+ "limit is set for the resource in question, the returned limit will be @code{#f}.")
+#define FUNC_NAME s_scm_getrlimit
+{
+ int iresource;
+ struct rlimit lim = { 0, 0 };
+
+ iresource = scm_to_resource (resource, FUNC_NAME, 1);
+
+ if (getrlimit (iresource, &lim) != 0)
+ scm_syserror (FUNC_NAME);
+
+ return scm_values (scm_list_2 ((lim.rlim_cur == RLIM_INFINITY) ? SCM_BOOL_F
+ : scm_from_long (lim.rlim_cur),
+ (lim.rlim_max == RLIM_INFINITY) ? SCM_BOOL_F
+ : scm_from_long (lim.rlim_max)));
+}
+#undef FUNC_NAME
+
+
+#ifdef HAVE_SETRLIMIT
+SCM_DEFINE (scm_setrlimit, "setrlimit", 3, 0, 0,
+ (SCM resource, SCM soft, SCM hard),
+ "Set a resource limit for this process. @var{resource} identifies the resource,\n"
+ "either as an integer or as a symbol. @var{soft} and @var{hard} should be integers,\n"
+ "or @code{#f} to indicate no limit (i.e., @code{RLIM_INFINITY}).\n\n"
+ "For example, @code{(setrlimit 'stack 150000 300000)} sets the @code{RLIMIT_STACK}\n"
+ "limit to 150 kilobytes, with a hard limit of 300 kB.")
+#define FUNC_NAME s_scm_setrlimit
+{
+ int iresource;
+ struct rlimit lim = { 0, 0 };
+
+ iresource = scm_to_resource (resource, FUNC_NAME, 1);
+
+ lim.rlim_cur = (soft == SCM_BOOL_F) ? RLIM_INFINITY : scm_to_long (soft);
+ lim.rlim_max = (hard == SCM_BOOL_F) ? RLIM_INFINITY : scm_to_long (hard);
+
+ if (setrlimit (iresource, &lim) != 0)
+ scm_syserror (FUNC_NAME);
+
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+#endif /* HAVE_SETRLIMIT */
+#endif /* HAVE_GETRLIMIT */
+
+
SCM_DEFINE (scm_kill, "kill", 2, 0, 0,
(SCM pid, SCM sig),
"Sends a signal to the specified process or group of processes.\n\n"
/* Signal values are interned in scm_init_posix(). */
#ifdef HAVE_KILL
if (kill (scm_to_int (pid), scm_to_int (sig)) != 0)
+ SCM_SYSERROR;
#else
+ /* Mingw has raise(), but not kill(). (Other raw DOS environments might
+ be similar.) Use raise() when the requested pid is our own process,
+ otherwise bomb. */
if (scm_to_int (pid) == getpid ())
- if (raise (scm_to_int (sig)) != 0)
+ {
+ if (raise (scm_to_int (sig)) != 0)
+ {
+ err:
+ SCM_SYSERROR;
+ }
+ else
+ {
+ errno = ENOSYS;
+ goto err;
+ }
+ }
#endif
- SCM_SYSERROR;
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
{
char *result;
int fd, err;
- SCM ret;
+ SCM ret = SCM_BOOL_F;
port = SCM_COERCE_OUTPORT (port);
SCM_VALIDATE_OPPORT (1, port);
fd = SCM_FPORT_FDES (port);
scm_i_scm_pthread_mutex_lock (&scm_i_misc_mutex);
+
SCM_SYSCALL (result = ttyname (fd));
err = errno;
- ret = scm_from_locale_string (result);
+ if (result != NULL)
+ result = strdup (result);
+
scm_i_pthread_mutex_unlock (&scm_i_misc_mutex);
if (!result)
errno = err;
SCM_SYSERROR;
}
+ else
+ ret = scm_take_locale_string (result);
+
return ret;
}
#undef FUNC_NAME
{
int rv;
char *c_str = scm_to_locale_string (str);
-#ifdef __MINGW32__
- size_t len = strlen (c_str);
-#endif
- if (strchr (c_str, '=') == NULL)
- {
-#ifdef HAVE_UNSETENV
- /* No '=' in argument means we should remove the variable from
- the environment. Not all putenvs understand this (for instance
- FreeBSD 4.8 doesn't). To be safe, we do it explicitely using
- unsetenv. */
- unsetenv (c_str);
- free (c_str);
-#else
- /* On e.g. Win32 hosts putenv() called with 'name=' removes the
- environment variable 'name'. */
- int e;
- char *ptr = scm_malloc (len + 2);
- strcpy (ptr, c_str);
- strcpy (ptr+len, "=");
- rv = putenv (ptr);
- e = errno; free (ptr); free (c_str); errno = e;
- if (rv < 0)
- SCM_SYSERROR;
-#endif /* !HAVE_UNSETENV */
- }
- else
- {
-#ifdef __MINGW32__
- /* If str is "FOO=", ie. attempting to set an empty string, then
- we need to see if it's been successful. On MINGW, "FOO="
- means remove FOO from the environment. As a workaround, we
- set "FOO= ", ie. a space, and then modify the string returned
- by getenv. It's not enough just to modify the string we set,
- because MINGW putenv copies it. */
-
- if (c_str[len-1] == '=')
- {
- char *ptr = scm_malloc (len+2);
- strcpy (ptr, c_str);
- strcpy (ptr+len, " ");
- rv = putenv (ptr);
- if (rv < 0)
- {
- int eno = errno;
- free (c_str);
- errno = eno;
- SCM_SYSERROR;
- }
- /* truncate to just the name */
- c_str[len-1] = '\0';
- ptr = getenv (c_str);
- if (ptr)
- ptr[0] = '\0';
- return SCM_UNSPECIFIED;
- }
-#endif /* __MINGW32__ */
+ /* Leave C_STR in the environment. */
- /* Leave c_str in the environment. */
+ /* Gnulib's `putenv' module honors the semantics described above. */
+ rv = putenv (c_str);
+ if (rv < 0)
+ SCM_SYSERROR;
- rv = putenv (c_str);
- if (rv < 0)
- SCM_SYSERROR;
- }
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
-#ifndef USE_GNU_LOCALE_API
/* This mutex is used to serialize invocations of `setlocale ()' on non-GNU
- systems (i.e., systems where a reentrant locale API is not available).
- See `i18n.c' for details. */
-scm_i_pthread_mutex_t scm_i_locale_mutex;
-#endif
+ systems (i.e., systems where a reentrant locale API is not available). It
+ is also acquired before calls to `nl_langinfo ()'. See `i18n.c' for
+ details. */
+scm_i_pthread_mutex_t scm_i_locale_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER;
#ifdef HAVE_SETLOCALE
"the locale will be set using environment variables.")
#define FUNC_NAME s_scm_setlocale
{
+ int c_category;
char *clocale;
char *rv;
scm_dynwind_free (clocale);
}
-#ifndef USE_GNU_LOCALE_API
+ c_category = scm_i_to_lc_category (category, 1);
+
scm_i_pthread_mutex_lock (&scm_i_locale_mutex);
-#endif
- rv = setlocale (scm_i_to_lc_category (category, 1), clocale);
-#ifndef USE_GNU_LOCALE_API
+ rv = setlocale (c_category, clocale);
scm_i_pthread_mutex_unlock (&scm_i_locale_mutex);
-#endif
if (rv == NULL)
{
"The return value is unspecified.")
#define FUNC_NAME s_scm_nice
{
+ int nice_value;
+
/* nice() returns "prio-NZERO" on success or -1 on error, but -1 can arise
from "prio-NZERO", so an error must be detected from errno changed */
errno = 0;
- nice (scm_to_int (incr));
+ nice_value = nice (scm_to_int (incr));
if (errno != 0)
SCM_SYSERROR;
+
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
#define FUNC_NAME s_scm_crypt
{
SCM ret;
- char *c_key, *c_salt;
+ char *c_key, *c_salt, *c_ret;
scm_dynwind_begin (0);
scm_i_dynwind_pthread_mutex_lock (&scm_i_misc_mutex);
c_salt = scm_to_locale_string (salt);
scm_dynwind_free (c_salt);
- ret = scm_from_locale_string (crypt (c_key, c_salt));
+ /* The Linux crypt(3) man page says crypt will return NULL and set errno
+ on error. (Eg. ENOSYS if legal restrictions mean it cannot be
+ implemented). */
+ c_ret = crypt (c_key, c_salt);
+ if (c_ret == NULL)
+ SCM_SYSERROR;
+ ret = scm_from_locale_string (c_ret);
scm_dynwind_end ();
return ret;
}
#endif /* HAVE_GETLOGIN */
#if HAVE_CUSERID
+
+# if !HAVE_DECL_CUSERID
+extern char *cuserid (char *);
+# endif
+
SCM_DEFINE (scm_cuserid, "cuserid", 0, 0, 0,
(void),
"Return a string containing a user name associated with the\n"
#undef FUNC_NAME
#endif /* HAVE_GETPASS */
-/* Wrapper function for flock() support under M$-Windows. */
-#ifdef __MINGW32__
-# include <io.h>
-# include <sys/locking.h>
-# include <errno.h>
-# ifndef _LK_UNLCK
- /* Current MinGW package fails to define this. *sigh* */
-# define _LK_UNLCK 0
-# endif
-# define LOCK_EX 1
-# define LOCK_UN 2
-# define LOCK_SH 4
-# define LOCK_NB 8
-
-static int flock (int fd, int operation)
-{
- long pos, len;
- int ret, err;
-
- /* Disable invalid arguments. */
- if (((operation & (LOCK_EX | LOCK_SH)) == (LOCK_EX | LOCK_SH)) ||
- ((operation & (LOCK_EX | LOCK_UN)) == (LOCK_EX | LOCK_UN)) ||
- ((operation & (LOCK_SH | LOCK_UN)) == (LOCK_SH | LOCK_UN)))
- {
- errno = EINVAL;
- return -1;
- }
-
- /* Determine mode of operation and discard unsupported ones. */
- if (operation == (LOCK_NB | LOCK_EX))
- operation = _LK_NBLCK;
- else if (operation & LOCK_UN)
- operation = _LK_UNLCK;
- else if (operation == LOCK_EX)
- operation = _LK_LOCK;
- else
- {
- errno = EINVAL;
- return -1;
- }
-
- /* Save current file pointer and seek to beginning. */
- if ((pos = lseek (fd, 0, SEEK_CUR)) == -1 || (len = filelength (fd)) == -1)
- return -1;
- lseek (fd, 0L, SEEK_SET);
-
- /* Deadlock if necessary. */
- do
- {
- ret = _locking (fd, operation, len);
- }
- while (ret == -1 && errno == EDEADLOCK);
-
- /* Produce meaningful error message. */
- if (errno == EACCES && operation == _LK_NBLCK)
- err = EDEADLOCK;
- else
- err = errno;
-
- /* Return to saved file position pointer. */
- lseek (fd, pos, SEEK_SET);
- errno = err;
- return ret;
-}
-#endif /* __MINGW32__ */
-
-#if HAVE_FLOCK || defined (__MINGW32__)
SCM_DEFINE (scm_flock, "flock", 2, 0, 0,
(SCM file, SCM operation),
"Apply or remove an advisory lock on an open file.\n"
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
-#endif /* HAVE_FLOCK */
#if HAVE_SETHOSTNAME
SCM_DEFINE (scm_sethostname, "sethostname", 1, 0, 0,
void
scm_init_posix ()
{
-#ifndef USE_GNU_LOCALE_API
- scm_i_pthread_mutex_init (&scm_i_locale_mutex, NULL);
-#endif
-
scm_add_feature ("posix");
#ifdef HAVE_GETEUID
scm_add_feature ("EIDs");
HCoop / bpt / guile.git / blobdiff