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+ /*
+ ** GNU Pth - The GNU Portable Threads
+ ** Copyright (c) 1999-2000 Ralf S. Engelschall <rse@engelschall.com>
+ **
+ ** This file is part of GNU Pth, a non-preemptive thread scheduling
+ ** library which can be found at http://www.gnu.org/software/pth/.
+ **
+ ** 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.
+ **
+ ** 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ ** USA, or contact Ralf S. Engelschall <rse@engelschall.com>.
+ **
+ ** pth_syscall.c: Pth direct syscall support
+ */
+ /* ``Free Software: generous programmers
+ from around the world all join
+ forces to help you shoot yourself
+ in the foot for free.''
+ -- Unknown */
+ #include "pth_p.h"
+
+ #if cpp
+
+ #if PTH_SYSCALL_HARD
+ #include <sys/syscall.h>
+ #ifdef HAVE_SYS_SOCKETCALL_H
+ #include <sys/socketcall.h>
+ #endif
+ #define pth_sc(func) PTH_SC_##func
+ #else
+ #define pth_sc(func) func
+ #endif
+
+ #endif /* cpp */
+
+ /* some exported variables for object layer checks */
+ int pth_syscall_soft = PTH_SYSCALL_SOFT;
+ int pth_syscall_hard = PTH_SYSCALL_HARD;
+
+ /* Pth hard wrapper for syscall fork(2) */
+ #if cpp
+ #if defined(SYS_fork)
+ #define PTH_SC_fork() ((pid_t)syscall(SYS_fork))
+ #else
+ #define PTH_SC_fork fork
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && defined(SYS_fork)
+ pid_t fork(void)
+ {
+ pth_implicit_init();
+ return pth_fork();
+ }
+ #endif
+
+ /* Pth hard wrapper for sleep(3) [internally fully emulated] */
+ #if PTH_SYSCALL_HARD
+ unsigned int sleep(unsigned int sec)
+ {
+ pth_implicit_init();
+ return pth_sleep(sec);
+ }
+ #endif
+
+ /* Pth hard wrapper for system(3) [internally fully emulated] */
+ #if PTH_SYSCALL_HARD
+ int system(const char *cmd)
+ {
+ pth_implicit_init();
+ return pth_system(cmd);
+ }
+ #endif
+
+ /* Pth hard wrapper for sigprocmask(2) */
+ #if cpp
+ #if defined(SYS_sigprocmask)
+ #define PTH_SC_sigprocmask(a1,a2,a3) ((int)syscall(SYS_sigprocmask,(a1),(a2),(a3)))
+ #else
+ #define PTH_SC_sigprocmask sigprocmask
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && defined(SYS_sigprocmask)
+ int sigprocmask(int how, const sigset_t *set, sigset_t *oset)
+ {
+ pth_implicit_init();
+ return pth_sigmask(how, set, oset);
+ }
+ #endif
+
+ /* Pth hard wrapper for sigwait(3) [internally fully emulated] */
+ #if PTH_SYSCALL_HARD
+ int sigwait(const sigset_t *set, int *sigp)
+ {
+ pth_implicit_init();
+ return pth_sigwait(set, sigp);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall waitpid(2) */
+ #if cpp
+ #if defined(SYS_waitpid)
+ #define PTH_SC_waitpid(a1,a2,a3) ((int)syscall(SYS_waitpid,(a1),(a2),(a3)))
+ #else
+ #define PTH_SC_waitpid waitpid
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && defined(SYS_waitpid)
+ pid_t waitpid(pid_t wpid, int *status, int options)
+ {
+ pth_implicit_init();
+ return pth_waitpid(wpid, status, options);
+ }
+ #endif
+
+ #if defined(SYS_socketcall) && defined(SOCKOP_connect) && defined(SOCKOP_accept) /* mainly Linux */
+ intern int _pth_socketcall(int call, ...)
+ {
+ va_list ap;
+ unsigned long args[3];
+
+ va_start(ap, call);
+ switch (call) {
+ case SOCKOP_connect:
+ args[0] = (unsigned long)va_arg(ap, int);
+ args[1] = (unsigned long)va_arg(ap, struct sockaddr *);
+ args[2] = (unsigned long)va_arg(ap, int);
+ break;
+ case SOCKOP_accept:
+ args[0] = (unsigned long)va_arg(ap, int);
+ args[1] = (unsigned long)va_arg(ap, struct sockaddr *);
+ args[2] = (unsigned long)va_arg(ap, int *);
+ break;
+ }
+ va_end(ap);
+ return syscall(SYS_socketcall, call, args);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall connect(2) */
+ #if cpp
+ #if defined(SYS_connect)
+ #define PTH_SC_connect(a1,a2,a3) ((int)syscall(SYS_connect,(a1),(a2),(a3)))
+ #elif defined(SYS_socketcall) && defined(SOCKOP_connect) /* mainly Linux */
+ #define PTH_SC_connect(a1,a2,a3) ((int)_pth_socketcall(SOCKOP_connect,(a1),(a2),(a3)))
+ #else
+ #define PTH_SC_connect connect
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD &&\
+ (defined(SYS_connect) || (defined(SYS_socketcall) && defined(SOCKOP_connect)))
+ int connect(int s, const struct sockaddr *addr, socklen_t addrlen)
+ {
+ pth_implicit_init();
+ return pth_connect(s, addr, addrlen);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall accept(2) */
+ #if cpp
+ #if defined(SYS_accept)
+ #define PTH_SC_accept(a1,a2,a3) ((int)syscall(SYS_accept,(a1),(a2),(a3)))
+ #elif defined(SYS_socketcall) && defined(SOCKOP_accept) /* mainly Linux */
+ #define PTH_SC_accept(a1,a2,a3) ((int)_pth_socketcall(SOCKOP_accept,(a1),(a2),(a3)))
+ #else
+ #define PTH_SC_accept accept
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD &&\
+ (defined(SYS_accept) || (defined(SYS_socketcall) && defined(SOCKOP_accept)))
+ int accept(int s, struct sockaddr *addr, socklen_t *addrlen)
+ {
+ pth_implicit_init();
+ return pth_accept(s, addr, addrlen);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall select(2) */
+ #if cpp
+ #if defined(SYS__newselect) /* mainly Linux */
+ #define PTH_SC_select(a1,a2,a3,a4,a5) ((int)syscall(SYS__newselect,(a1),(a2),(a3),(a4),(a5)))
+ #elif defined(SYS_select)
+ #define PTH_SC_select(a1,a2,a3,a4,a5) ((int)syscall(SYS_select,(a1),(a2),(a3),(a4),(a5)))
+ #else
+ #define PTH_SC_select select
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && (defined(SYS__newselect) || defined(SYS_select))
+ int select(int nfds, fd_set *readfds, fd_set *writefds,
+ fd_set *exceptfds, struct timeval *timeout)
+ {
+ pth_implicit_init();
+ return pth_select(nfds, readfds, writefds, exceptfds, timeout);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall poll(2) */
+ #if cpp
+ #if defined(SYS_poll)
+ #define PTH_SC_poll(a1,a2,a3) ((int)syscall(SYS_poll,(a1),(a2),(a3)))
+ #else
+ #define PTH_SC_poll poll
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && defined(SYS_poll)
+ int poll(struct pollfd *pfd, nfds_t nfd, int timeout)
+ {
+ pth_implicit_init();
+ return pth_poll(pfd, nfd, timeout);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall read(2) */
+ #if cpp
+ #if defined(SYS_read)
+ #define PTH_SC_read(a1,a2,a3) ((ssize_t)syscall(SYS_read,(a1),(a2),(a3)))
+ #else
+ #define PTH_SC_read read
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && defined(SYS_read)
+ ssize_t read(int fd, void *buf, size_t nbytes)
+ {
+ pth_implicit_init();
+ return pth_read(fd, buf, nbytes);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall write(2) */
+ #if cpp
+ #if defined(SYS_write)
+ #define PTH_SC_write(a1,a2,a3) ((ssize_t)syscall(SYS_write,(a1),(a2),(a3)))
+ #else
+ #define PTH_SC_write write
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && defined(SYS_write)
+ ssize_t write(int fd, const void *buf, size_t nbytes)
+ {
+ pth_implicit_init();
+ return pth_write(fd, buf, nbytes);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall readv(2) */
+ #if cpp
+ #if defined(SYS_readv)
+ #define PTH_SC_readv(a1,a2,a3) ((ssize_t)syscall(SYS_readv,(a1),(a2),(a3)))
+ #else
+ #define PTH_SC_readv readv
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && defined(SYS_readv)
+ ssize_t readv(int fd, const struct iovec *iov, int iovcnt)
+ {
+ pth_implicit_init();
+ return pth_readv(fd, iov, iovcnt);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall writev(2) */
+ #if cpp
+ #if defined(SYS_writev)
+ #define PTH_SC_writev(a1,a2,a3) ((ssize_t)syscall(SYS_writev,(a1),(a2),(a3)))
+ #else
+ #define PTH_SC_writev writev
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && defined(SYS_writev)
+ ssize_t writev(int fd, const struct iovec *iov, int iovcnt)
+ {
+ pth_implicit_init();
+ return pth_writev(fd, iov, iovcnt);
+ }
+ #endif
+
+ /* Pth hard wrapper for pread(3) [internally fully emulated] */
+ #if PTH_SYSCALL_HARD
+ ssize_t pread(int, void *, size_t, off_t);
+ ssize_t pread(int fd, void *buf, size_t nbytes, off_t offset)
+ {
+ pth_implicit_init();
+ return pth_pread(fd, buf, nbytes, offset);
+ }
+ #endif
+
+ /* Pth hard wrapper for pwrite(3) [internally fully emulated] */
+ #if PTH_SYSCALL_HARD
+ ssize_t pwrite(int, const void *, size_t, off_t);
+ ssize_t pwrite(int fd, const void *buf, size_t nbytes, off_t offset)
+ {
+ pth_implicit_init();
+ return pth_pwrite(fd, buf, nbytes, offset);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall recvfrom(2) */
+ #if cpp
+ #if defined(SYS_recvfrom)
+ #define PTH_SC_recvfrom(a1,a2,a3,a4,a5,a6) ((ssize_t)syscall(SYS_recvfrom,(a1),(a2),(a3),(a4),(a5),(a6)))
+ #else
+ #define PTH_SC_recvfrom recvfrom
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && defined(SYS_recvfrom)
+ ssize_t recvfrom(int fd, void *buf, size_t nbytes, int flags, struct sockaddr *from, socklen_t *fromlen)
+ {
+ pth_implicit_init();
+ return pth_recvfrom(fd, buf, nbytes, flags, from, fromlen);
+ }
+ #endif
+
+ /* Pth hard wrapper for syscall sendto(2) */
+ #if cpp
+ #if defined(SYS_sendto)
+ #define PTH_SC_sendto(a1,a2,a3,a4,a5,a6) ((ssize_t)syscall(SYS_sendto,(a1),(a2),(a3),(a4),(a5),(a6)))
+ #else
+ #define PTH_SC_sendto sendto
+ #endif
+ #endif /* cpp */
+ #if PTH_SYSCALL_HARD && defined(SYS_sendto)
+ ssize_t sendto(int fd, const void *buf, size_t nbytes, int flags, const struct sockaddr *to, socklen_t tolen)
+ {
+ pth_implicit_init();
+ return pth_sendto(fd, buf, nbytes, flags, to, tolen);
+ }
+ #endif
+
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