The Tor Browser: nsprpub/pr/src/md/os2/os2io.c@6474c204b198 (annotated)

nsprpub/pr/src/md/os2/os2io.c@6474c204b198 (annotated)

nsprpub/pr/src/md/os2/os2io.c

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 /* OS2 IO module
  *
  * Assumes synchronous I/O.
  *
  */
 #include "primpl.h"
 #include "prio.h"
 #include <ctype.h>
 #include <string.h>
 #include <limits.h>
 #include <dirent.h>
 #include <fcntl.h>
 #include <io.h>
 struct _MDLock               _pr_ioq_lock;
 static PRBool isWSEB = PR_FALSE; /* whether we are using an OS/2 kernel that supports large files */
 typedef APIRET (*DosOpenLType)(PSZ pszFileName, PHFILE pHf, PULONG pulAction,
                             LONGLONG cbFile, ULONG ulAttribute,
                             ULONG fsOpenFlags, ULONG fsOpenMode,
                             PEAOP2 peaop2);
 typedef APIRET (*DosSetFileLocksLType)(HFILE hFile, PFILELOCKL pflUnlock,
                                     PFILELOCKL pflLock, ULONG timeout,
                                     ULONG flags);
 typedef APIRET (*DosSetFilePtrLType)(HFILE hFile, LONGLONG ib, ULONG method,
                                   PLONGLONG ibActual);
 DosOpenLType myDosOpenL;
 DosSetFileLocksLType myDosSetFileLocksL;
 DosSetFilePtrLType myDosSetFilePtrL;
 void
 _PR_MD_INIT_IO()
 {
     APIRET rc;
     HMODULE module;
     sock_init();
     rc = DosLoadModule(NULL, 0, "DOSCALL1", &module);
     if (rc != NO_ERROR)
     {
         return;
     }
     rc = DosQueryProcAddr(module, 981, NULL, (PFN*) &myDosOpenL);
     if (rc != NO_ERROR)
     {
         return;
     }
     rc = DosQueryProcAddr(module, 986, NULL, (PFN*) &myDosSetFileLocksL);
     if (rc != NO_ERROR)
     {
         return;
     }
     rc = DosQueryProcAddr(module, 988, NULL, (PFN*) &myDosSetFilePtrL);
     if (rc != NO_ERROR)
     {
         return;
     }
     isWSEB = PR_TRUE;
 }
 PRStatus
 _PR_MD_WAIT(PRThread *thread, PRIntervalTime ticks)
 {
     PRInt32 rv;
     ULONG count;
     PRUint32 msecs = (ticks == PR_INTERVAL_NO_TIMEOUT) ?
         SEM_INDEFINITE_WAIT : PR_IntervalToMilliseconds(ticks);
     rv = DosWaitEventSem(thread->md.blocked_sema, msecs);
     DosResetEventSem(thread->md.blocked_sema, &count);
     switch(rv)
     {
         case NO_ERROR:
             return PR_SUCCESS;
             break;
         case ERROR_TIMEOUT:
             _PR_THREAD_LOCK(thread);
             if (thread->state == _PR_IO_WAIT) {
 			  ;
             } else {
                 if (thread->wait.cvar != NULL) {
                     thread->wait.cvar = NULL;
                     _PR_THREAD_UNLOCK(thread);
                 } else {
                     /* The CVAR was notified just as the timeout
                      * occurred.  This led to us being notified twice.
                      * call SemRequest() to clear the semaphore.
                      */
                     _PR_THREAD_UNLOCK(thread);
                     rv = DosWaitEventSem(thread->md.blocked_sema, 0);
                     DosResetEventSem(thread->md.blocked_sema, &count);
                     PR_ASSERT(rv == NO_ERROR);
                 }
             }
             return PR_SUCCESS;
             break;
         default:
             break;
     }
     return PR_FAILURE;
 }
 PRStatus
 _PR_MD_WAKEUP_WAITER(PRThread *thread)
 {
     if ( _PR_IS_NATIVE_THREAD(thread) )
     {
         if (DosPostEventSem(thread->md.blocked_sema) != NO_ERROR)
             return PR_FAILURE;
         else
 			return PR_SUCCESS;
 	}
 }
 /* --- FILE IO ----------------------------------------------------------- */
 /*
  *  _PR_MD_OPEN() -- Open a file
  *
  *  returns: a fileHandle
  *
  *  The NSPR open flags (osflags) are translated into flags for OS/2
  *
  *  Mode seems to be passed in as a unix style file permissions argument
  *  as in 0666, in the case of opening the logFile.
  *
  */
 PRInt32
 _PR_MD_OPEN(const char *name, PRIntn osflags, int mode)
 {
     HFILE file;
     PRInt32 access = OPEN_SHARE_DENYNONE;
     PRInt32 flags = 0L;
     APIRET rc = 0;
     PRUword actionTaken;
 #ifdef MOZ_OS2_HIGH_MEMORY
     /*
      * All the pointer arguments (&file, &actionTaken and name) have to be in
      * low memory for DosOpen to use them.
      * The following moves name to low memory.
      */
     if ((ULONG)name >= 0x20000000)
     {
         size_t len = strlen(name) + 1;
         char *copy = (char *)alloca(len);
         memcpy(copy, name, len);
         name = copy;
     }
 #endif
     if (osflags & PR_SYNC) access |= OPEN_FLAGS_WRITE_THROUGH;
     if (osflags & PR_RDONLY)
         access |= OPEN_ACCESS_READONLY;
     else if (osflags & PR_WRONLY)
         access |= OPEN_ACCESS_WRITEONLY;
     else if(osflags & PR_RDWR)
         access |= OPEN_ACCESS_READWRITE;
     if ( osflags & PR_CREATE_FILE && osflags & PR_EXCL )
     {
         flags = OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_FAIL_IF_EXISTS;
     }
     else if (osflags & PR_CREATE_FILE)
     {
         if (osflags & PR_TRUNCATE)
             flags = OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_REPLACE_IF_EXISTS;
         else
             flags = OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS;
     }
     else
     {
         if (osflags & PR_TRUNCATE)
             flags = OPEN_ACTION_FAIL_IF_NEW | OPEN_ACTION_REPLACE_IF_EXISTS;
         else
             flags = OPEN_ACTION_FAIL_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS;
     }
     do {
         if (isWSEB)
         {
                 rc = myDosOpenL((char*)name,
                      &file,            /* file handle if successful */
                      &actionTaken,     /* reason for failure        */
 ,                /* initial size of new file  */
                      FILE_NORMAL,      /* file system attributes    */
                      flags,            /* Open flags                */
                      access,           /* Open mode and rights      */
 );               /* OS/2 Extended Attributes  */
         }
         else
         {
                 rc = DosOpen((char*)name,
                      &file,            /* file handle if successful */
                      &actionTaken,     /* reason for failure        */
 ,                /* initial size of new file  */
                      FILE_NORMAL,      /* file system attributes    */
                      flags,            /* Open flags                */
                      access,           /* Open mode and rights      */
 );               /* OS/2 Extended Attributes  */
         };
         if (rc == ERROR_TOO_MANY_OPEN_FILES) {
             ULONG CurMaxFH = 0;
             LONG ReqCount = 20;
             APIRET rc2;
             rc2 = DosSetRelMaxFH(&ReqCount, &CurMaxFH);
             if (rc2 != NO_ERROR) {
                 break;
             }
         }
     } while (rc == ERROR_TOO_MANY_OPEN_FILES);
     if (rc != NO_ERROR) {
         _PR_MD_MAP_OPEN_ERROR(rc);
         return -1;
     }
     return (PRInt32)file;
 }
 PRInt32
 _PR_MD_READ(PRFileDesc *fd, void *buf, PRInt32 len)
 {
     ULONG bytes;
     int rv;
     rv = DosRead((HFILE)fd->secret->md.osfd,
                  (PVOID)buf,
                  len,
                  &bytes);
     if (rv != NO_ERROR)
     {
         /* ERROR_HANDLE_EOF can only be returned by async io */
         PR_ASSERT(rv != ERROR_HANDLE_EOF);
         if (rv == ERROR_BROKEN_PIPE)
             return 0;
 		else {
 			_PR_MD_MAP_READ_ERROR(rv);
         return -1;
     }
     }
     return (PRInt32)bytes;
 }
 PRInt32
 _PR_MD_WRITE(PRFileDesc *fd, const void *buf, PRInt32 len)
 {
     PRInt32 bytes;
     int rv;
     rv = DosWrite((HFILE)fd->secret->md.osfd,
                   (PVOID)buf,
                   len,
                   (PULONG)&bytes);
     if (rv != NO_ERROR)
     {
         _PR_MD_MAP_WRITE_ERROR(rv);
         return -1;
     }
     if (len != bytes) {
         rv = ERROR_DISK_FULL;
         _PR_MD_MAP_WRITE_ERROR(rv);
         return -1;
     }
     return bytes;
 } /* --- end _PR_MD_WRITE() --- */
 PRInt32
 _PR_MD_LSEEK(PRFileDesc *fd, PRInt32 offset, PRSeekWhence whence)
 {
     PRInt32 rv;
     PRUword newLocation;
     rv = DosSetFilePtr((HFILE)fd->secret->md.osfd, offset, whence, &newLocation);
 	if (rv != NO_ERROR) {
 		_PR_MD_MAP_LSEEK_ERROR(rv);
 		return -1;
 	} else
 		return newLocation;
 }
 PRInt64
 _PR_MD_LSEEK64(PRFileDesc *fd, PRInt64 offset, PRSeekWhence whence)
 {
 #ifdef NO_LONG_LONG
     PRInt64 result;
     PRInt32 rv, low = offset.lo, hi = offset.hi;
     PRUword newLocation;
     rv = DosSetFilePtr((HFILE)fd->secret->md.osfd, low, whence, &newLocation);
     rv = DosSetFilePtr((HFILE)fd->secret->md.osfd, hi, FILE_CURRENT, &newLocation);
   	if (rv != NO_ERROR) {
 		_PR_MD_MAP_LSEEK_ERROR(rv);
 		hi = newLocation = -1;
    }
     result.lo = newLocation;
     result.hi = hi;
 	return result;
 #else
     PRInt32 where, rc, lo = (PRInt32)offset, hi = (PRInt32)(offset >> 32);
     PRUint64 rv;
     PRUint32 newLocation, uhi;
     PRUint64 newLocationL;
     switch (whence)
       {
       case PR_SEEK_SET:
         where = FILE_BEGIN;
         break;
       case PR_SEEK_CUR:
         where = FILE_CURRENT;
         break;
       case PR_SEEK_END:
         where = FILE_END;
         break;
       default:
         PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
         return -1;
     }
     if (isWSEB)
     {
         rc = myDosSetFilePtrL((HFILE)fd->secret->md.osfd, offset, where, (PLONGLONG)&newLocationL);
     }
     else
     {
         rc = DosSetFilePtr((HFILE)fd->secret->md.osfd, lo, where, (PULONG)&newLocation);
     }
     if (rc != NO_ERROR) {
       _PR_MD_MAP_LSEEK_ERROR(rc);
       return -1;
     }
     if (isWSEB)
     {
         return newLocationL;
     }
     uhi = (PRUint32)hi;
     PR_ASSERT((PRInt32)uhi >= 0);
     rv = uhi;
     PR_ASSERT((PRInt64)rv >= 0);
     rv = (rv << 32);
     PR_ASSERT((PRInt64)rv >= 0);
     rv += newLocation;
     PR_ASSERT((PRInt64)rv >= 0);
     return (PRInt64)rv;
 #endif
 }
 PRInt32
 _PR_MD_FSYNC(PRFileDesc *fd)
 {
     PRInt32 rc = DosResetBuffer((HFILE)fd->secret->md.osfd);
     if (rc != NO_ERROR) {
    	if (rc != ERROR_ACCESS_DENIED) {
    			_PR_MD_MAP_FSYNC_ERROR(rc);
    	    return -1;
    	}
     }
     return 0;
 }
 PRInt32
 _MD_CloseFile(PRInt32 osfd)
 {
     PRInt32 rv;
     rv = DosClose((HFILE)osfd);
  	if (rv != NO_ERROR)
 		_PR_MD_MAP_CLOSE_ERROR(rv);
     return rv;
 }
 /* --- DIR IO ------------------------------------------------------------ */
 #define GetFileFromDIR(d)       (isWSEB?(d)->d_entry.large.achName:(d)->d_entry.small.achName)
 #define GetFileAttr(d)          (isWSEB?(d)->d_entry.large.attrFile:(d)->d_entry.small.attrFile)
 void FlipSlashes(char *cp, int len)
 {
     while (--len >= 0) {
     if (cp[0] == '/') {
         cp[0] = PR_DIRECTORY_SEPARATOR;
     }
     cp++;
     }
 }
 /*
 **
 ** Local implementations of standard Unix RTL functions which are not provided
 ** by the VAC RTL.
 **
 */
 PRInt32
 _PR_MD_CLOSE_DIR(_MDDir *d)
 {
    PRInt32 rc;
     if ( d ) {
       rc = DosFindClose(d->d_hdl);
       if(rc == NO_ERROR){
         d->magic = (PRUint32)-1;
         return PR_SUCCESS;
 		} else {
 			_PR_MD_MAP_CLOSEDIR_ERROR(rc);
         	return PR_FAILURE;
 		}
     }
     PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
     return PR_FAILURE;
 }
 PRStatus
 _PR_MD_OPEN_DIR(_MDDir *d, const char *name)
 {
     char filename[ CCHMAXPATH ];
     PRUword numEntries, rc;
     numEntries = 1;
     PR_snprintf(filename, CCHMAXPATH, "%s%s%s",
                 name, PR_DIRECTORY_SEPARATOR_STR, "*.*");
     FlipSlashes( filename, strlen(filename) );
     d->d_hdl = HDIR_CREATE;
     if (isWSEB)
     {
         rc = DosFindFirst( filename,
                            &d->d_hdl,
                            FILE_DIRECTORY | FILE_HIDDEN,
                            &(d->d_entry.large),
                            sizeof(d->d_entry.large),
                            &numEntries,
                            FIL_STANDARDL);
     }
     else
     {
         rc = DosFindFirst( filename,
                            &d->d_hdl,
                            FILE_DIRECTORY | FILE_HIDDEN,
                            &(d->d_entry.small),
                            sizeof(d->d_entry.small),
                            &numEntries,
                            FIL_STANDARD);
     }
     if ( rc != NO_ERROR ) {
 		_PR_MD_MAP_OPENDIR_ERROR(rc);
         return PR_FAILURE;
     }
     d->firstEntry = PR_TRUE;
     d->magic = _MD_MAGIC_DIR;
     return PR_SUCCESS;
 }
 char *
 _PR_MD_READ_DIR(_MDDir *d, PRIntn flags)
 {
     PRUword numFiles = 1;
     BOOL rv;
     char *fileName;
     USHORT fileAttr;
     if ( d ) {
        while (1) {
            if (d->firstEntry) {
                d->firstEntry = PR_FALSE;
                rv = NO_ERROR;
            } else {
                rv = DosFindNext(d->d_hdl,
                                 &(d->d_entry),
                                 sizeof(d->d_entry),
                                 &numFiles);
            }
            if (rv != NO_ERROR) {
                break;
            }
            fileName = GetFileFromDIR(d);
            fileAttr = GetFileAttr(d);
            if ( (flags & PR_SKIP_DOT) &&
                 (fileName[0] == '.') && (fileName[1] == '\0'))
                 continue;
            if ( (flags & PR_SKIP_DOT_DOT) &&
                 (fileName[0] == '.') && (fileName[1] == '.') &&
                 (fileName[2] == '\0'))
                 continue;
 			/*
 			 * XXX
 			 * Is this the correct definition of a hidden file on OS/2?
 			 */
            if ((flags & PR_SKIP_NONE) && (fileAttr & FILE_HIDDEN))
                 return fileName;
            else if ((flags & PR_SKIP_HIDDEN) && (fileAttr & FILE_HIDDEN))
                 continue;
            return fileName;
         }
         PR_ASSERT(NO_ERROR != rv);
 			_PR_MD_MAP_READDIR_ERROR(rv);
         return NULL;
 		}
     PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
     return NULL;
 }
 PRInt32
 _PR_MD_DELETE(const char *name)
 {
     PRInt32 rc = DosDelete((char*)name);
     if(rc == NO_ERROR) {
         return 0;
     } else {
 		_PR_MD_MAP_DELETE_ERROR(rc);
         return -1;
     }
 }
 PRInt32
 _PR_MD_STAT(const char *fn, struct stat *info)
 {
     PRInt32 rv;
     char filename[CCHMAXPATH];
     PR_snprintf(filename, CCHMAXPATH, "%s", fn);
     FlipSlashes(filename, strlen(filename));
     rv = _stat((char*)filename, info);
     if (-1 == rv) {
         /*
          * Check for MSVC runtime library _stat() bug.
          * (It's really a bug in FindFirstFile().)
          * If a pathname ends in a backslash or slash,
          * e.g., c:\temp\ or c:/temp/, _stat() will fail.
          * Note: a pathname ending in a slash (e.g., c:/temp/)
          * can be handled by _stat() on NT but not on Win95.
          *
          * We remove the backslash or slash at the end and
          * try again.
          *
          * Not sure if this happens on OS/2 or not,
          * but it doesn't hurt to be careful.
          */
         int len = strlen(fn);
         if (len > 0 && len <= _MAX_PATH
                 && (fn[len - 1] == '\\' || fn[len - 1] == '/')) {
             char newfn[_MAX_PATH + 1];
             strcpy(newfn, fn);
             newfn[len - 1] = '\0';
             rv = _stat(newfn, info);
         }
     }
     if (-1 == rv) {
         _PR_MD_MAP_STAT_ERROR(errno);
     }
     return rv;
 }
 PRInt32
 _PR_MD_GETFILEINFO(const char *fn, PRFileInfo *info)
 {
     struct stat sb;
     PRInt32 rv;
     PRInt64 s, s2us;
     if ( (rv = _PR_MD_STAT(fn, &sb)) == 0 ) {
         if (info) {
             if (S_IFREG & sb.st_mode)
                 info->type = PR_FILE_FILE ;
             else if (S_IFDIR & sb.st_mode)
                 info->type = PR_FILE_DIRECTORY;
             else
                 info->type = PR_FILE_OTHER;
             info->size = sb.st_size;
             LL_I2L(s2us, PR_USEC_PER_SEC);
             LL_I2L(s, sb.st_mtime);
             LL_MUL(s, s, s2us);
             info->modifyTime = s;
             LL_I2L(s, sb.st_ctime);
             LL_MUL(s, s, s2us);
             info->creationTime = s;
         }
     }
     return rv;
 }
 PRInt32
 _PR_MD_GETFILEINFO64(const char *fn, PRFileInfo64 *info)
 {
     PRFileInfo info32;
     PRInt32 rv = _PR_MD_GETFILEINFO(fn, &info32);
     if (rv != 0)
     {
         return rv;
     }
     info->type = info32.type;
     LL_UI2L(info->size,info32.size);
     info->modifyTime = info32.modifyTime;
     info->creationTime = info32.creationTime;
     if (isWSEB)
     {
         APIRET rc ;
         FILESTATUS3L fstatus;
         rc = DosQueryPathInfo(fn, FIL_STANDARDL, &fstatus, sizeof(fstatus));
         if (NO_ERROR != rc)
         {
             _PR_MD_MAP_OPEN_ERROR(rc);
             return -1;
         }
         if (! (fstatus.attrFile & FILE_DIRECTORY))
         {
             info->size = fstatus.cbFile;
         }
     }
     return rv;
 }
 PRInt32
 _PR_MD_GETOPENFILEINFO(const PRFileDesc *fd, PRFileInfo *info)
 {
    /* For once, the VAC compiler/library did a nice thing.
     * The file handle used by the C runtime is the same one
     * returned by the OS when you call DosOpen().  This means
     * that you can take an OS HFILE and use it with C file
     * functions.  The only caveat is that you have to call
     * _setmode() first to initialize some junk.  This is
     * immensely useful because I did not have a clue how to
     * implement this function otherwise.  The windows folks
     * took the source from the Microsoft C library source, but
     * IBM wasn't kind enough to ship the source with VAC.
     * On second thought, the needed function could probably
     * be gotten from the OS/2 GNU library source, but the
     * point is now moot.
     */
    struct stat hinfo;
     PRInt64 s, s2us;
     _setmode(fd->secret->md.osfd, O_BINARY);
     if(fstat((int)fd->secret->md.osfd, &hinfo) != NO_ERROR) {
 		_PR_MD_MAP_FSTAT_ERROR(errno);
         return -1;
 	}
     if (hinfo.st_mode & S_IFDIR)
         info->type = PR_FILE_DIRECTORY;
     else
         info->type = PR_FILE_FILE;
     info->size = hinfo.st_size;
     LL_I2L(s2us, PR_USEC_PER_SEC);
     LL_I2L(s, hinfo.st_mtime);
     LL_MUL(s, s, s2us);
     info->modifyTime = s;
     LL_I2L(s, hinfo.st_ctime);
     LL_MUL(s, s, s2us);
     info->creationTime = s;
     return 0;
 }
 PRInt32
 _PR_MD_GETOPENFILEINFO64(const PRFileDesc *fd, PRFileInfo64 *info)
 {
     PRFileInfo info32;
     PRInt32 rv = _PR_MD_GETOPENFILEINFO(fd, &info32);
     if (0 == rv)
     {
        info->type = info32.type;
        LL_UI2L(info->size,info32.size);
        info->modifyTime = info32.modifyTime;
        info->creationTime = info32.creationTime;
     }
     if (isWSEB)
     {
         APIRET rc ;
         FILESTATUS3L fstatus;
         rc = DosQueryFileInfo(fd->secret->md.osfd, FIL_STANDARDL, &fstatus, sizeof(fstatus));
         if (NO_ERROR != rc)
         {
             _PR_MD_MAP_OPEN_ERROR(rc);
             return -1;
         }
         if (! (fstatus.attrFile & FILE_DIRECTORY))
         {
             info->size = fstatus.cbFile;
         }
     }
     return rv;
 }
 PRInt32
 _PR_MD_RENAME(const char *from, const char *to)
 {
    PRInt32 rc;
     /* Does this work with dot-relative pathnames? */
     if ( (rc = DosMove((char *)from, (char *)to)) == NO_ERROR) {
         return 0;
     } else {
 		_PR_MD_MAP_RENAME_ERROR(rc);
         return -1;
     }
 }
 PRInt32
 _PR_MD_ACCESS(const char *name, PRAccessHow how)
 {
   PRInt32 rv;
     switch (how) {
       case PR_ACCESS_WRITE_OK:
         rv = access(name, 02);
 		break;
       case PR_ACCESS_READ_OK:
         rv = access(name, 04);
 		break;
       case PR_ACCESS_EXISTS:
         return access(name, 00);
 	  	break;
       default:
 		PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
 		return -1;
     }
 	if (rv < 0)
 		_PR_MD_MAP_ACCESS_ERROR(errno);
     return rv;
 }
 PRInt32
 _PR_MD_MKDIR(const char *name, PRIntn mode)
 {
    PRInt32 rc;
     /* XXXMB - how to translate the "mode"??? */
     if ((rc = DosCreateDir((char *)name, NULL))== NO_ERROR) {
         return 0;
     } else {
 		_PR_MD_MAP_MKDIR_ERROR(rc);
         return -1;
     }
 }
 PRInt32
 _PR_MD_RMDIR(const char *name)
 {
    PRInt32 rc;
     if ( (rc = DosDeleteDir((char *)name)) == NO_ERROR) {
         return 0;
     } else {
 		_PR_MD_MAP_RMDIR_ERROR(rc);
         return -1;
     }
 }
 PRStatus
 _PR_MD_LOCKFILE(PRInt32 f)
 {
     PRInt32   rv;
     FILELOCK lock, unlock;
     FILELOCKL lockL, unlockL;
     lock.lOffset = 0;
     lockL.lOffset = 0;
     lock.lRange = 0xffffffff;
     lockL.lRange =  0xffffffffffffffff;
     unlock.lOffset = 0;
     unlock.lRange = 0;
     unlockL.lOffset = 0;
     unlockL.lRange = 0;
     /*
      * loop trying to DosSetFileLocks(),
      * pause for a few miliseconds when can't get the lock
      * and try again
      */
     for( rv = FALSE; rv == FALSE; /* do nothing */ )
     {
         if (isWSEB)
         {
 	    rv = myDosSetFileLocksL( (HFILE) f,
 			                    &unlockL, &lockL,
 , 0);
         }
         else
         {
 	    rv = DosSetFileLocks( (HFILE) f,
 			                    &unlock, &lock,
 , 0);
         }
 		if ( rv != NO_ERROR )
         {
             DosSleep( 50 );  /* Sleep() a few milisecs and try again. */
         }
     } /* end for() */
     return PR_SUCCESS;
 } /* end _PR_MD_LOCKFILE() */
 PRStatus
 _PR_MD_TLOCKFILE(PRInt32 f)
 {
     return _PR_MD_LOCKFILE(f);
 } /* end _PR_MD_TLOCKFILE() */
 PRStatus
 _PR_MD_UNLOCKFILE(PRInt32 f)
 {
     PRInt32   rv;
     FILELOCK lock, unlock;
     FILELOCKL lockL, unlockL;
     lock.lOffset = 0;
     lockL.lOffset = 0;
     lock.lRange = 0;
     lockL.lRange = 0;
     unlock.lOffset = 0;
     unlockL.lOffset = 0;
     unlock.lRange = 0xffffffff;
     unlockL.lRange = 0xffffffffffffffff;
     if (isWSEB)
     {
         rv = myDosSetFileLocksL( (HFILE) f,
                                         &unlockL, &lockL,
 , 0);
     }
     else
     {
         rv = DosSetFileLocks( (HFILE) f,
                                     &unlock, &lock,
 , 0);
     }
     if ( rv != NO_ERROR )
     {
         return PR_SUCCESS;
     }
     else
     {
         return PR_FAILURE;
     }
 } /* end _PR_MD_UNLOCKFILE() */
 PRStatus
 _PR_MD_SET_FD_INHERITABLE(PRFileDesc *fd, PRBool inheritable)
 {
     APIRET rc = 0;
     ULONG flags;
     switch (fd->methods->file_type)
     {
         case PR_DESC_PIPE:
         case PR_DESC_FILE:
             rc = DosQueryFHState((HFILE)fd->secret->md.osfd, &flags);
             if (rc != NO_ERROR) {
                 PR_SetError(PR_UNKNOWN_ERROR, _MD_ERRNO());
                 return PR_FAILURE;
             }
             if (inheritable)
               flags &= ~OPEN_FLAGS_NOINHERIT;
             else
               flags |= OPEN_FLAGS_NOINHERIT;
             /* Mask off flags DosSetFHState don't want. */
             flags &= (OPEN_FLAGS_WRITE_THROUGH | OPEN_FLAGS_FAIL_ON_ERROR | OPEN_FLAGS_NO_CACHE | OPEN_FLAGS_NOINHERIT);
             rc = DosSetFHState((HFILE)fd->secret->md.osfd, flags);
             if (rc != NO_ERROR) {
                 PR_SetError(PR_UNKNOWN_ERROR, _MD_ERRNO());
                 return PR_FAILURE;
             }
             break;
         case PR_DESC_LAYERED:
             /* what to do here? */
             PR_SetError(PR_UNKNOWN_ERROR, 87 /*ERROR_INVALID_PARAMETER*/);
             return PR_FAILURE;
         case PR_DESC_SOCKET_TCP:
         case PR_DESC_SOCKET_UDP:
             /* These are global on OS/2. */
             break;
     }
     return PR_SUCCESS;
 }
 void
 _PR_MD_INIT_FD_INHERITABLE(PRFileDesc *fd, PRBool imported)
 {
     /* XXX this function needs to be implemented */
     fd->secret->inheritable = _PR_TRI_UNKNOWN;
 }
 void
 _PR_MD_QUERY_FD_INHERITABLE(PRFileDesc *fd)
 {
     /* XXX this function needs to be reviewed */
     ULONG flags;
     PR_ASSERT(_PR_TRI_UNKNOWN == fd->secret->inheritable);
     if (DosQueryFHState((HFILE)fd->secret->md.osfd, &flags) == 0) {
         if (flags & OPEN_FLAGS_NOINHERIT) {
             fd->secret->inheritable = _PR_TRI_FALSE;
         } else {
             fd->secret->inheritable = _PR_TRI_TRUE;
         }
     }
 }

The Tor Browser / annotate

nsprpub/pr/src/md/os2/os2io.c@6474c204b198 (annotated)

nsprpub/pr/src/md/os2/os2io.c