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/** BEGIN COPYRIGHT BLOCK
* This Program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; version 2 of the License.
*
* This Program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this Program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA.
*
* In addition, as a special exception, Red Hat, Inc. gives You the additional
* right to link the code of this Program with code not covered under the GNU
* General Public License ("Non-GPL Code") and to distribute linked combinations
* including the two, subject to the limitations in this paragraph. Non-GPL Code
* permitted under this exception must only link to the code of this Program
* through those well defined interfaces identified in the file named EXCEPTION
* found in the source code files (the "Approved Interfaces"). The files of
* Non-GPL Code may instantiate templates or use macros or inline functions from
* the Approved Interfaces without causing the resulting work to be covered by
* the GNU General Public License. Only Red Hat, Inc. may make changes or
* additions to the list of Approved Interfaces. You must obey the GNU General
* Public License in all respects for all of the Program code and other code used
* in conjunction with the Program except the Non-GPL Code covered by this
* exception. If you modify this file, you may extend this exception to your
* version of the file, but you are not obligated to do so. If you do not wish to
* provide this exception without modification, you must delete this exception
* statement from your version and license this file solely under the GPL without
* exception.
*
*
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/*
* file.c: system specific functions for reading/writing files
*
* See file.h for formal definitions of what these functions do
*
* Rob McCool
*/
#include "base/file.h"
#ifdef BSD_RLIMIT
#include <sys/time.h>
#include <sys/resource.h>
#else
#include <stdlib.h>
#include <signal.h>
#endif
#ifdef XP_WIN32
#include <time.h> /* time */
#include <sys/stat.h> /* stat */
#include <errno.h>
#include <direct.h>
#include <base/nterr.h>
/* Removed for ns security integration
#include <xp_error.h>
*/
#endif
#include <prerror.h>
#include "private/pprio.h"
#include "prlock.h"
extern "C" char *nscperror_lookup(int err);
/* --- globals -------------------------------------------------------------*/
/* PRFileDesc * SYS_ERROR_FD = NULL; */
const int errbuf_size = 256;
const unsigned int LOCKFILERANGE=0x7FFFFFFF;
PRLock *_atomic_write_lock = NULL;
/* --------------------------------- stat --------------------------------- */
/* XXXMB - Can't convert to PR_GetFileInfo because we directly exported
* the stat interface... Damn.
*/
NSAPI_PUBLIC int system_stat(char *path, struct stat *finfo)
{
#ifdef XP_WIN32
int chop, l;
/* The NT stat is very peculiar about directory names. */
/* XXX aruna - there is a bug here, maybe in the C runtime.
* Stating the same path in a separate program succeeds. From
* jblack's profiling, this needs to be replaced by the Win32
* calls anyway.*/
l = strlen(path);
if((path[l - 1] == '/') &&
(!(isalpha(path[0]) && (!strcmp(&path[1], ":/")))))
{
chop = 1;
path[--l] = '\0';
}
else chop = 0;
#endif /* XP_WIN32 */
#ifdef XP_UNIX
if(stat(path, finfo) == -1)
return -1;
#else /* XP_WIN32 */
if(_stat(path, (struct _stat *)finfo) == -1) {
/* XXXMB - this sucks;
* try to convert to an error code we'll expect...
*/
switch(errno) {
case ENOENT: PR_SetError(PR_FILE_NOT_FOUND_ERROR, errno); break;
default: PR_SetError(PR_UNKNOWN_ERROR, errno); break;
}
return -1;
}
/* NT sets the time fields to -1 if it thinks that the file
* is a device ( like com1.html, lpt1.html etc) In this case
* simply set last modified time to the current time....
*/
if (finfo->st_mtime == -1) {
finfo->st_mtime = time(NULL);
}
if (finfo->st_atime == -1) {
finfo->st_atime = 0;
}
if (finfo->st_ctime == -1) {
finfo->st_ctime = 0;
}
if(chop)
path[l++] = '/';
#endif /* XP_WIN32 */
if(S_ISREG(finfo->st_mode) && (path[strlen(path) - 1] == '/')) {
/* File with trailing slash */
errno = ENOENT;
return -1;
}
return 0;
}
NSAPI_PUBLIC int system_fread(SYS_FILE fd, char *buf, int sz)
{
/* XXXMB - this is the *one* function which does return a length
* instead of the IO_ERROR/IO_OKAY.
*/
return PR_Read(fd, buf, sz);
}
NSAPI_PUBLIC int system_fwrite(SYS_FILE fd, char *buf, int sz) {
int n,o,w;
for(n=sz,o=0; n; n-=w,o+=w) {
if((w = PR_Write(fd, &buf[o], n)) < 0)
return IO_ERROR;
}
return IO_OKAY;
}
/* ---------------------------- Standard UNIX ----------------------------- */
#ifdef XP_UNIX
#include <sys/file.h> /* flock */
NSAPI_PUBLIC int system_fwrite_atomic(SYS_FILE fd, char *buf, int sz)
{
int ret;
#if 0
if(flock(fd,LOCK_EX) == -1)
return IO_ERROR;
#endif
ret = system_fwrite(fd,buf,sz);
#if 0
if(flock(fd,LOCK_UN) == -1)
return IO_ERROR; /* ??? */
#endif
return ret;
}
/* -------------------------- system_nocoredumps -------------------------- */
NSAPI_PUBLIC int system_nocoredumps(void)
{
#ifdef BSD_RLIMIT
struct rlimit rl;
rl.rlim_cur = 0;
rl.rlim_max = 0;
return setrlimit(RLIMIT_CORE, &rl);
#else
#if defined(SNI)
/* C++ compiler seems to find more that one overloaded instance of exit() ?! */
#define EXITFUNC ::exit
#else
#define EXITFUNC exit
#endif
signal(SIGQUIT, EXITFUNC);
signal(SIGILL, EXITFUNC);
signal(SIGTRAP, EXITFUNC);
signal(SIGABRT, EXITFUNC);
signal(SIGIOT, EXITFUNC);
signal(SIGEMT, EXITFUNC);
signal(SIGFPE, EXITFUNC);
signal(SIGBUS, EXITFUNC);
signal(SIGSEGV, EXITFUNC);
signal(SIGSYS, EXITFUNC);
return 0;
#endif
}
#endif /* XP_UNIX */
/* --------------------------- file_setinherit ---------------------------- */
NSAPI_PUBLIC int file_setinherit(SYS_FILE fd, int value)
{
#if defined(XP_WIN32)
int ret;
// ret = SetHandleInformation((HANDLE)PR_FileDesc2NativeHandle(fd), 0, value?HANDLE_FLAG_INHERIT:0);
// This function did nothing before since the mask was set to 0.
ret = SetHandleInformation((HANDLE)PR_FileDesc2NativeHandle(fd), HANDLE_FLAG_INHERIT, value?HANDLE_FLAG_INHERIT:0);
return ret==0?-1:0;
#elif defined(XP_UNIX)
int flags = 0;
PRInt32 nativeFD;
PRFileDesc *bottom = fd;
while (bottom->lower != NULL) {
bottom = bottom->lower;
}
nativeFD = PR_FileDesc2NativeHandle(bottom);
#if 0
fprintf(stderr, "\nInfo(file_setinherit): Native file descriptor is %d\n", nativeFD);
#endif
flags = fcntl(nativeFD, F_GETFD, 0);
if(flags == -1)
return -1;
if(value)
flags &= (~FD_CLOEXEC);
else
flags |= FD_CLOEXEC;
fcntl(nativeFD, F_SETFD, flags);
return 0;
/* Comment out for ns security/ nspr integration (HACK for NOW)
int flags = fcntl(PR_FileDesc2NativeHandle(fd), F_GETFD, 0);
if(flags == -1)
return -1;
if(value)
flags &= (~FD_CLOEXEC);
else
flags |= FD_CLOEXEC;
fcntl(PR_FileDesc2NativeHandle(fd), F_SETFD, flags);
return 0;
*/
#endif
}
NSAPI_PUBLIC SYS_FILE system_fopenRO(char *p)
{
SYS_FILE f = PR_Open(p, PR_RDONLY, 0);
if (!f)
return SYS_ERROR_FD;
return f;
}
NSAPI_PUBLIC SYS_FILE system_fopenWA(char *p)
{
SYS_FILE f = PR_Open(p, PR_RDWR|PR_CREATE_FILE|PR_APPEND, 0644);
if (!f)
return SYS_ERROR_FD;
return f;
}
NSAPI_PUBLIC SYS_FILE system_fopenRW(char *p)
{
SYS_FILE f = PR_Open(p, PR_RDWR|PR_CREATE_FILE, 0644);
if (!f)
return SYS_ERROR_FD;
return f;
}
NSAPI_PUBLIC SYS_FILE system_fopenWT(char *p)
{
SYS_FILE f = PR_Open(p, PR_RDWR|PR_CREATE_FILE|PR_TRUNCATE, 0644);
if (!f)
return SYS_ERROR_FD;
return f;
}
NSAPI_PUBLIC int system_fclose(SYS_FILE fd)
{
return (PR_Close(fd));
}
#ifdef FILE_WIN32
int CgiBuffering;
NSAPI_PUBLIC SYS_FILE system_fopen(char *path, int access, int flags)
{
char p2[MAX_PATH];
SYS_FILE ret;
HANDLE fd;
if (strlen(path) >= MAX_PATH) {
return SYS_ERROR_FD;
}
file_unix2local(path, p2);
fd = CreateFile(p2, access, FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, flags, 0, NULL);
ret = PR_ImportFile((int32)fd);
if(ret == INVALID_HANDLE_VALUE)
return SYS_ERROR_FD;
return ret;
}
NSAPI_PUBLIC int system_pread(SYS_FILE fd, char *buf, int BytesToRead) {
unsigned long BytesRead = 0;
int result = 0;
BOOLEAN TimeoutSet = FALSE;
/* XXXMB - nspr20 should be able to do this; but right now it doesn't
* return proper error info.
* fix it later...
*/
if(ReadFile((HANDLE)PR_FileDesc2NativeHandle(fd), (LPVOID)buf, BytesToRead, &BytesRead, NULL) == FALSE) {
if (GetLastError() == ERROR_BROKEN_PIPE) {
return IO_EOF;
} else {
return IO_ERROR;
}
}
return (BytesRead ? BytesRead : IO_EOF);
}
NSAPI_PUBLIC int system_pwrite(SYS_FILE fd, char *buf, int BytesToWrite)
{
unsigned long BytesWritten;
if (WriteFile((HANDLE)PR_FileDesc2NativeHandle(fd), (LPVOID)buf,
BytesToWrite, &BytesWritten, NULL) == FALSE) {
return IO_ERROR;
}
return BytesWritten;
}
NSAPI_PUBLIC int system_fwrite_atomic(SYS_FILE fd, char *buf, int sz)
{
int ret;
#if 0
if(system_flock(fd) == IO_ERROR)
return IO_ERROR;
#endif
/* XXXMB - this is technically thread unsafe, but it catches any
* callers of fwrite_atomic when we're single threaded and just coming
* to life.
*/
if (!_atomic_write_lock) {
_atomic_write_lock = PR_NewLock();
}
PR_Lock(_atomic_write_lock);
ret = system_fwrite(fd,buf,sz);
PR_Unlock(_atomic_write_lock);
#if 0
if(system_ulock(fd) == IO_ERROR)
return IO_ERROR;
#endif
return ret;
}
NSAPI_PUBLIC void file_unix2local(char *path, char *p2)
{
/* Try to handle UNIX-style paths */
if((!strchr(path, FILE_PATHSEP))) {
int x;
for(x = 0; path[x]; x++)
p2[x] = (path[x] == '/' ? '\\' : path[x]);
p2[x] = '\0';
}
else
strcpy(p2, path);
}
NSAPI_PUBLIC int system_nocoredumps(void)
{
return 0;
}
/* --------------------------- system_winerr ------------------------------ */
#include <winsock.h>
#include <errno.h>
#include "util.h"
NSAPI_PUBLIC char *system_winsockerr(void)
{
int errn = WSAGetLastError();
return FindError(errn);
}
NSAPI_PUBLIC char *system_winerr(void)
{
int errn = GetLastError();
if (errn == 0)
errn = WSAGetLastError();
return FindError(errn);
}
/* ------------------------- Dir related stuff ---------------------------- */
NSAPI_PUBLIC SYS_DIR dir_open(char *pathp)
{
dir_s *ret = (dir_s *) MALLOC(sizeof(dir_s));
char path[MAX_PATH];
int l;
if (strlen(pathp) >= MAX_PATH) {
return NULL;
}
l = util_sprintf(path, "%s", pathp) - 1;
path[strlen(pathp)] = '\0';
if(path[strlen(path) - 1] != FILE_PATHSEP)
strcpy (path + strlen(path), "\\*.*");
else
util_sprintf(path, "%s*.*", path);
ret->de.d_name = NULL;
if( (ret->dp = FindFirstFile(path, &ret->fdata)) != INVALID_HANDLE_VALUE)
return ret;
FREE(ret);
return NULL;
}
NSAPI_PUBLIC SYS_DIRENT *dir_read(SYS_DIR ds)
{
if(FindNextFile(ds->dp, &ds->fdata) == FALSE)
return NULL;
if(ds->de.d_name)
FREE(ds->de.d_name);
ds->de.d_name = STRDUP(ds->fdata.cFileName);
return &ds->de;
}
NSAPI_PUBLIC void dir_close(SYS_DIR ds)
{
FindClose(ds->dp);
if(ds->de.d_name)
FREE(ds->de.d_name);
FREE(ds);
}
#endif /* FILE_WIN32 */
NSAPI_PUBLIC int file_notfound(void)
{
#ifdef FILE_WIN32
int errn = PR_GetError();
return (errn == PR_FILE_NOT_FOUND_ERROR);
#else
return (errno == ENOENT);
#endif
}
#ifdef XP_UNIX
#if !defined(SNI) && !defined(LINUX) && !defined(freebsd)
extern char *sys_errlist[];
#endif /* SNI */
#endif
#define ERRMSG_SIZE 35
#ifdef THREAD_ANY
static int errmsg_key = -1;
#include "systhr.h"
/* Removed for ns security integration
#include "xp_error.h"
*/
#else /* THREAD_ANY */
static char errmsg[ERRMSG_SIZE];
#endif /* THREAD_ANY */
#include "util.h"
void system_errmsg_init(void)
{
if (errmsg_key == -1) {
#if defined(THREAD_ANY)
errmsg_key = systhread_newkey();
#endif
#ifdef XP_WIN32
HashNtErrors();
#endif
if (!_atomic_write_lock)
_atomic_write_lock = PR_NewLock();
}
}
NSAPI_PUBLIC int system_errmsg_fn(char **buff, size_t maxlen)
{
char static_error[128];
char *lmsg = 0; /* Local message pointer */
size_t msglen = 0;
PRErrorCode nscp_error;
#ifdef XP_WIN32
LPTSTR sysmsg = 0;
#endif
nscp_error = PR_GetError();
/* If there is a NSPR error, but it is "unknown", try to get the OSError
* and use that instead.
*/
if (nscp_error == PR_UNKNOWN_ERROR)
errno = PR_GetOSError();
if (nscp_error != 0 && nscp_error != PR_UNKNOWN_ERROR){
char *nscp_error_msg;
nscp_error_msg = nscperror_lookup(nscp_error);
if(nscp_error_msg){
PR_SetError(0, 0);
lmsg = nscp_error_msg;
} else {
util_snprintf(static_error, sizeof(static_error), "unknown error %d", nscp_error);
lmsg = static_error;
}
} else {
#if defined(XP_WIN32)
msglen = FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_ALLOCATE_BUFFER,
NULL,
GetLastError(),
LOCALE_SYSTEM_DEFAULT,
(LPTSTR)&sysmsg,
0,
0);
if (msglen > 0)
lmsg = sysmsg;
else
lmsg = system_winerr();
SetLastError(0);
#else
/* replaced
#if defined(SNI) || defined(LINUX)
/ C++ platform has no definition for sys_errlist /
lmsg = strerror(errno);
#else
lmsg = sys_errlist[errno];
#endif
with lmsg =strerror(errno);*/
lmsg=strerror(errno);
errno = 0;
#endif
}
/* At this point lmsg points to something. */
msglen = strlen(lmsg);
if (*buff == NULL)
*buff = STRDUP(lmsg);
else if (maxlen > msglen)
memcpy(*buff, lmsg, msglen+1);
else
msglen = 0;
#ifdef XP_WIN32
/* NT's FormatMessage() dynamically allocated the msg; free it */
if (sysmsg)
LocalFree(sysmsg);
#endif
return msglen;
}
NSAPI_PUBLIC const char *
system_errmsg(void)
{
char *buff = 0;
if (errmsg_key == -1)
return "unknown early startup error";
// rmaxwell - This is extremely lame.
// Allocate a buffer in thread local storage to
// hold the last error message.
// The whole error message facility is broken and should be
// updated to get error strings out of the code.
if(!(buff = (char *) systhread_getdata(errmsg_key))) {
buff = (char *) PERM_MALLOC(errbuf_size);
systhread_setdata(errmsg_key, (void *)buff);
}
system_errmsg_fn(&buff, errbuf_size);
if (buff == 0)
return "Could not retrieve system error message";
return buff;
}
NSAPI_PUBLIC int
system_rename(char *oldpath, char *newpath)
{
return rename(oldpath, newpath);
}
NSAPI_PUBLIC int
system_unlink(char *path)
{
return PR_Delete(path)==PR_FAILURE?-1:0;
}
NSAPI_PUBLIC int system_lseek(SYS_FILE fd, int off, int wh)
{
switch (wh) {
case 0:
return PR_Seek(fd, off, PR_SEEK_SET);
break;
case 1:
return PR_Seek(fd, off, PR_SEEK_CUR);
break;
case 2:
return PR_Seek(fd, off, PR_SEEK_END);
break;
default:
return -1;
}
}
NSAPI_PUBLIC int
system_tlock(SYS_FILE fd)
{
return PR_TLockFile(fd);
}
NSAPI_PUBLIC int
system_flock(SYS_FILE fd)
{
return PR_LockFile(fd);
}
NSAPI_PUBLIC int
system_ulock(SYS_FILE fd)
{
return PR_UnlockFile(fd);
}
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