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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /nsprpub/pr/src/md/os2/os2io.c | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip |
Add m-esr52 at 52.6.0
Diffstat (limited to 'nsprpub/pr/src/md/os2/os2io.c')
-rw-r--r-- | nsprpub/pr/src/md/os2/os2io.c | 942 |
1 files changed, 942 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/os2/os2io.c b/nsprpub/pr/src/md/os2/os2io.c new file mode 100644 index 000000000..3c81ae346 --- /dev/null +++ b/nsprpub/pr/src/md/os2/os2io.c @@ -0,0 +1,942 @@ +/* -*- 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 */ + 0, /* initial size of new file */ + FILE_NORMAL, /* file system attributes */ + flags, /* Open flags */ + access, /* Open mode and rights */ + 0); /* OS/2 Extended Attributes */ + } + else + { + rc = DosOpen((char*)name, + &file, /* file handle if successful */ + &actionTaken, /* reason for failure */ + 0, /* initial size of new file */ + FILE_NORMAL, /* file system attributes */ + flags, /* Open flags */ + access, /* Open mode and rights */ + 0); /* 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, 0); + } + else + { + rv = DosSetFileLocks( (HFILE) f, + &unlock, &lock, + 0, 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, 0); + } + else + { + rv = DosSetFileLocks( (HFILE) f, + &unlock, &lock, + 0, 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; + } + } +} |