d8ff44b79f
former is callable from user space and the latter from the kernel one. Make kernel version take additional argument which tells if the respective call should check for additional restrictions for sending signals to suid/sugid applications or not. Make all emulation layers using non-checked version, since signal numbers in emulation layers can have different meaning that in native mode and such protection can cause misbehaviour. As a result remove LIBTHR from the signals allowed to be delivered to a suid/sugid application. Requested (sorta) by: rwatson MFC after: 2 weeks
140 lines
6.2 KiB
C
140 lines
6.2 KiB
C
/*-
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* Copyright (c) 2002 Ian Dowse. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_SYSCALLSUBR_H_
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#define _SYS_SYSCALLSUBR_H_
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#include <sys/signal.h>
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#include <sys/uio.h>
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#include <sys/socket.h>
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#include <sys/mac.h>
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#include <sys/mount.h>
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struct itimerval;
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struct image_args;
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struct mbuf;
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struct msghdr;
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struct msqid_ds;
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struct rlimit;
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struct rusage;
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struct sockaddr;
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struct kill_args;
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struct stat;
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int kern___getcwd(struct thread *td, u_char *buf, enum uio_seg bufseg,
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u_int buflen);
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int kern_access(struct thread *td, char *path, enum uio_seg pathseg,
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int flags);
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int kern_alternate_path(struct thread *td, const char *prefix, char *path,
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enum uio_seg pathseg, char **pathbuf, int create);
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int kern_bind(struct thread *td, int fd, struct sockaddr *sa);
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int kern_chdir(struct thread *td, char *path, enum uio_seg pathseg);
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int kern_chmod(struct thread *td, char *path, enum uio_seg pathseg,
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int mode);
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int kern_chown(struct thread *td, char *path, enum uio_seg pathseg, int uid,
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int gid);
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int kern_connect(struct thread *td, int fd, struct sockaddr *sa);
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int kern_execve(struct thread *td, struct image_args *args,
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struct mac *mac_p);
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int kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg);
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int kern_fhstatfs(struct thread *td, fhandle_t fh, struct statfs *buf);
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int kern_fstat(struct thread *td, int fd, struct stat *sbp);
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int kern_fstatfs(struct thread *td, int fd, struct statfs *buf);
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int kern_futimes(struct thread *td, int fd, struct timeval *tptr,
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enum uio_seg tptrseg);
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int kern_getitimer(struct thread *, u_int, struct itimerval *);
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int kern_getrusage(struct thread *td, int who, struct rusage *rup);
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int kern_getsockopt(struct thread *td, int s, int level, int name,
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void *optval, enum uio_seg valseg, socklen_t *valsize);
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int kern_kill(struct thread *, struct kill_args *, int);
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int kern_lchown(struct thread *td, char *path, enum uio_seg pathseg,
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int uid, int gid);
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int kern_link(struct thread *td, char *path, char *link,
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enum uio_seg segflg);
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int kern_lstat(struct thread *td, char *path, enum uio_seg pathseg,
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struct stat *sbp);
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int kern_lutimes(struct thread *td, char *path, enum uio_seg pathseg,
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struct timeval *tptr, enum uio_seg tptrseg);
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int kern_mkdir(struct thread *td, char *path, enum uio_seg segflg,
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int mode);
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int kern_mkfifo(struct thread *td, char *path, enum uio_seg pathseg,
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int mode);
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int kern_mknod(struct thread *td, char *path, enum uio_seg pathseg,
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int mode, int dev);
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int kern_msgctl(struct thread *, int, int, struct msqid_ds *);
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int kern_nanosleep(struct thread *td, struct timespec *rqt,
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struct timespec *rmt);
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int kern_open(struct thread *td, char *path, enum uio_seg pathseg,
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int flags, int mode);
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int kern_pathconf(struct thread *td, char *path, enum uio_seg pathseg,
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int name);
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int kern_ptrace(struct thread *td, int req, pid_t pid, void *addr,
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int data);
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int kern_readlink(struct thread *td, char *path, enum uio_seg pathseg,
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char *buf, enum uio_seg bufseg, int count);
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int kern_rename(struct thread *td, char *from, char *to,
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enum uio_seg pathseg);
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int kern_rmdir(struct thread *td, char *path, enum uio_seg pathseg);
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int kern_select(struct thread *td, int nd, fd_set *fd_in, fd_set *fd_ou,
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fd_set *fd_ex, struct timeval *tvp);
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int kern_sendit(struct thread *td, int s, struct msghdr *mp, int flags,
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struct mbuf *control, enum uio_seg segflg);
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int kern_setitimer(struct thread *, u_int, struct itimerval *,
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struct itimerval *);
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int kern_setrlimit(struct thread *, u_int, struct rlimit *);
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int kern_setsockopt(struct thread *td, int s, int level, int name,
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void *optval, enum uio_seg valseg, socklen_t valsize);
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int kern_shmat(struct thread *td, int shmid, const void *shmaddr,
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int shmflg);
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int kern_shmctl(struct thread *td, int shmid, int cmd, void *buf,
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size_t *bufsz);
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int kern_sigaction(struct thread *td, int sig, struct sigaction *act,
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struct sigaction *oact, int flags);
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int kern_sigaltstack(struct thread *td, stack_t *ss, stack_t *oss);
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int kern_sigprocmask(struct thread *td, int how,
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sigset_t *set, sigset_t *oset, int old);
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int kern_sigsuspend(struct thread *td, sigset_t mask);
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int kern_stat(struct thread *td, char *path, enum uio_seg pathseg,
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struct stat *sbp);
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int kern_statfs(struct thread *td, char *path, enum uio_seg pathseg,
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struct statfs *buf);
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int kern_symlink(struct thread *td, char *path, char *link,
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enum uio_seg segflg);
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int kern_truncate(struct thread *td, char *path, enum uio_seg pathseg,
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off_t length);
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int kern_unlink(struct thread *td, char *path, enum uio_seg pathseg);
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int kern_utimes(struct thread *td, char *path, enum uio_seg pathseg,
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struct timeval *tptr, enum uio_seg tptrseg);
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int kern_wait(struct thread *td, pid_t pid, int *status, int options,
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struct rusage *rup);
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/* flags for kern_sigaction */
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#define KSA_OSIGSET 0x0001 /* uses osigact_t */
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#define KSA_FREEBSD4 0x0002 /* uses ucontext4 */
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#endif /* !_SYS_SYSCALLSUBR_H_ */
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