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|
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#ifdef VMS
# include <file.h>
#else
# include <fcntl.h>
#endif
/* This comment is a kludge to get metaconfig to see the symbols
VAL_O_NONBLOCK
VAL_EAGAIN
RD_NODATA
EOF_NONBLOCK
and include the appropriate metaconfig unit
so that Configure will test how to turn on non-blocking I/O
for a file descriptor. See config.h for how to use these
in your extension.
While I'm at it, I'll have metaconfig look for HAS_POLL too.
--AD October 16, 1995
*/
static int
not_here(char *s)
{
croak("%s not implemented on this architecture", s);
return -1;
}
static double
constant(char *name, int arg)
{
errno = 0;
switch (*name) {
case 'F':
if (strnEQ(name, "F_", 2)) {
if (strEQ(name, "F_DUPFD"))
#ifdef F_DUPFD
return F_DUPFD;
#else
goto not_there;
#endif
if (strEQ(name, "F_EXLCK"))
#ifdef F_EXLCK
return F_EXLCK;
#else
goto not_there;
#endif
if (strEQ(name, "F_GETFD"))
#ifdef F_GETFD
return F_GETFD;
#else
goto not_there;
#endif
if (strEQ(name, "F_GETFL"))
#ifdef F_GETFL
return F_GETFL;
#else
goto not_there;
#endif
if (strEQ(name, "F_GETLK"))
#ifdef F_GETLK
return F_GETLK;
#else
goto not_there;
#endif
if (strEQ(name, "F_GETOWN"))
#ifdef F_GETOWN
return F_GETOWN;
#else
goto not_there;
#endif
if (strEQ(name, "F_POSIX"))
#ifdef F_POSIX
return F_POSIX;
#else
goto not_there;
#endif
if (strEQ(name, "F_RDLCK"))
#ifdef F_RDLCK
return F_RDLCK;
#else
goto not_there;
#endif
if (strEQ(name, "F_SETFD"))
#ifdef F_SETFD
return F_SETFD;
#else
goto not_there;
#endif
if (strEQ(name, "F_SETFL"))
#ifdef F_SETFL
return F_SETFL;
#else
goto not_there;
#endif
if (strEQ(name, "F_SETLK"))
#ifdef F_SETLK
return F_SETLK;
#else
goto not_there;
#endif
if (strEQ(name, "F_SETLKW"))
#ifdef F_SETLKW
return F_SETLKW;
#else
goto not_there;
#endif
if (strEQ(name, "F_SETOWN"))
#ifdef F_SETOWN
return F_SETOWN;
#else
goto not_there;
#endif
if (strEQ(name, "F_SHLCK"))
#ifdef F_SHLCK
return F_SHLCK;
#else
goto not_there;
#endif
if (strEQ(name, "F_UNLCK"))
#ifdef F_UNLCK
return F_UNLCK;
#else
goto not_there;
#endif
if (strEQ(name, "F_WRLCK"))
#ifdef F_WRLCK
return F_WRLCK;
#else
goto not_there;
#endif
errno = EINVAL;
return 0;
}
if (strEQ(name, "FAPPEND"))
#ifdef FAPPEND
return FAPPEND;
#else
goto not_there;
#endif
if (strEQ(name, "FASYNC"))
#ifdef FASYNC
return FASYNC;
#else
goto not_there;
#endif
if (strEQ(name, "FCREAT"))
#ifdef FCREAT
return FCREAT;
#else
goto not_there;
#endif
if (strEQ(name, "FD_CLOEXEC"))
#ifdef FD_CLOEXEC
return FD_CLOEXEC;
#else
goto not_there;
#endif
if (strEQ(name, "FDEFER"))
#ifdef FDEFER
return FDEFER;
#else
goto not_there;
#endif
if (strEQ(name, "FEXCL"))
#ifdef FEXCL
return FEXCL;
#else
goto not_there;
#endif
if (strEQ(name, "FNDELAY"))
#ifdef FNDELAY
return FNDELAY;
#else
goto not_there;
#endif
if (strEQ(name, "FNONBLOCK"))
#ifdef FNONBLOCK
return FNONBLOCK;
#else
goto not_there;
#endif
if (strEQ(name, "FSYNC"))
#ifdef FSYNC
return FSYNC;
#else
goto not_there;
#endif
if (strEQ(name, "FTRUNC"))
#ifdef FTRUNC
return FTRUNC;
#else
goto not_there;
#endif
break;
case 'L':
if (strnEQ(name, "LOCK_", 5)) {
/* We support flock() on systems which don't have it, so
always supply the constants. */
if (strEQ(name, "LOCK_SH"))
#ifdef LOCK_SH
return LOCK_SH;
#else
return 1;
#endif
if (strEQ(name, "LOCK_EX"))
#ifdef LOCK_EX
return LOCK_EX;
#else
return 2;
#endif
if (strEQ(name, "LOCK_NB"))
#ifdef LOCK_NB
return LOCK_NB;
#else
return 4;
#endif
if (strEQ(name, "LOCK_UN"))
#ifdef LOCK_UN
return LOCK_UN;
#else
return 8;
#endif
} else
goto not_there;
break;
case 'O':
if (strnEQ(name, "O_", 2)) {
if (strEQ(name, "O_ACCMODE"))
#ifdef O_ACCMODE
return O_ACCMODE;
#else
goto not_there;
#endif
if (strEQ(name, "O_APPEND"))
#ifdef O_APPEND
return O_APPEND;
#else
goto not_there;
#endif
if (strEQ(name, "O_ASYNC"))
#ifdef O_ASYNC
return O_ASYNC;
#else
goto not_there;
#endif
if (strEQ(name, "O_BINARY"))
#ifdef O_BINARY
return O_BINARY;
#else
goto not_there;
#endif
if (strEQ(name, "O_CREAT"))
#ifdef O_CREAT
return O_CREAT;
#else
goto not_there;
#endif
if (strEQ(name, "O_DEFER"))
#ifdef O_DEFER
return O_DEFER;
#else
goto not_there;
#endif
if (strEQ(name, "O_DSYNC"))
#ifdef O_DSYNC
return O_DSYNC;
#else
goto not_there;
#endif
if (strEQ(name, "O_EXCL"))
#ifdef O_EXCL
return O_EXCL;
#else
goto not_there;
#endif
if (strEQ(name, "O_EXLOCK"))
#ifdef O_EXLOCK
return O_EXLOCK;
#else
goto not_there;
#endif
if (strEQ(name, "O_NDELAY"))
#ifdef O_NDELAY
return O_NDELAY;
#else
goto not_there;
#endif
if (strEQ(name, "O_NOCTTY"))
#ifdef O_NOCTTY
return O_NOCTTY;
#else
goto not_there;
#endif
if (strEQ(name, "O_NONBLOCK"))
#ifdef O_NONBLOCK
return O_NONBLOCK;
#else
goto not_there;
#endif
if (strEQ(name, "O_RDONLY"))
#ifdef O_RDONLY
return O_RDONLY;
#else
goto not_there;
#endif
if (strEQ(name, "O_RDWR"))
#ifdef O_RDWR
return O_RDWR;
#else
goto not_there;
#endif
if (strEQ(name, "O_RSYNC"))
#ifdef O_RSYNC
return O_RSYNC;
#else
goto not_there;
#endif
if (strEQ(name, "O_SHLOCK"))
#ifdef O_SHLOCK
return O_SHLOCK;
#else
goto not_there;
#endif
if (strEQ(name, "O_SYNC"))
#ifdef O_SYNC
return O_SYNC;
#else
goto not_there;
#endif
if (strEQ(name, "O_TEXT"))
#ifdef O_TEXT
return O_TEXT;
#else
goto not_there;
#endif
if (strEQ(name, "O_TRUNC"))
#ifdef O_TRUNC
return O_TRUNC;
#else
goto not_there;
#endif
if (strEQ(name, "O_WRONLY"))
#ifdef O_WRONLY
return O_WRONLY;
#else
goto not_there;
#endif
} else
goto not_there;
break;
}
errno = EINVAL;
return 0;
not_there:
errno = ENOENT;
return 0;
}
MODULE = Fcntl PACKAGE = Fcntl
double
constant(name,arg)
char * name
int arg
|
