e5cc85fdc4
This single function allows copying file descriptors from and to processes, and closing a previously copied remote file descriptor. This function replaces the five FD-related UDS backcalls. While it limits the total number of in-flight file descriptors to OPEN_MAX, this change greatly improves crash recovery support of UDS, since all in-flight file descriptors will be closed instead of keeping them open indefinitely (causing VFS to crash on system shutdown). With the new copyfd call, UDS becomes simpler, and the concept of filps is no longer exposed outside of VFS. This patch also moves the checkperms(2) stub into libminlib, thus fully abstracting away message details of VFS communication from UDS. Change-Id: Idd32ad390a566143c8ef66955e5ae2c221cff966
142 lines
4.1 KiB
C
142 lines
4.1 KiB
C
/* This file contains the table used to map system call numbers onto the
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* routines that perform them.
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*/
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#define _TABLE
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#include "pm.h"
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#include <minix/callnr.h>
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#include <signal.h>
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#include "mproc.h"
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#include "param.h"
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int (*call_vec[])(void) = {
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no_sys, /* 0 = unused */
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do_exit, /* 1 = exit */
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do_fork, /* 2 = fork */
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no_sys, /* 3 = read */
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no_sys, /* 4 = write */
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no_sys, /* 5 = open */
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no_sys, /* 6 = close */
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do_waitpid, /* 7 = wait */
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no_sys, /* 8 = creat */
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no_sys, /* 9 = link */
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no_sys, /* 10 = unlink */
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do_waitpid, /* 11 = waitpid */
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no_sys, /* 12 = chdir */
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do_time, /* 13 = time */
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no_sys, /* 14 = mknod */
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no_sys, /* 15 = chmod */
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no_sys, /* 16 = chown */
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do_brk, /* 17 = break */
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no_sys, /* 18 = stat */
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no_sys, /* 19 = lseek */
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do_get, /* 20 = getpid */
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no_sys, /* 21 = mount */
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no_sys, /* 22 = umount */
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do_set, /* 23 = setuid */
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do_get, /* 24 = getuid */
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do_stime, /* 25 = stime */
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do_trace, /* 26 = ptrace */
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do_alarm, /* 27 = alarm */
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no_sys, /* 28 = fstat */
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do_pause, /* 29 = pause */
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no_sys, /* 30 = utime */
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do_getepinfo, /* 31 = getepinfo */
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do_set, /* 32 = setgroups */
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no_sys, /* 33 = access */
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do_get, /* 34 = getgroups */
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no_sys, /* 35 = unused */
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no_sys, /* 36 = sync */
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do_kill, /* 37 = kill */
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no_sys, /* 38 = rename */
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no_sys, /* 39 = mkdir */
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no_sys, /* 40 = rmdir */
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no_sys, /* 41 = dup */
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no_sys, /* 42 = pipe */
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do_times, /* 43 = times */
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no_sys, /* 44 = unused */
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no_sys, /* 45 = unused */
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do_set, /* 46 = setgid */
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do_get, /* 47 = getgid */
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no_sys, /* 48 = (signal)*/
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no_sys, /* 49 = unused */
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no_sys, /* 50 = lstat */
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no_sys, /* 51 = (stat) */
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no_sys, /* 52 = (fstat) */
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no_sys, /* 53 = (lstat) */
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no_sys, /* 54 = ioctl */
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no_sys, /* 55 = fcntl */
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no_sys, /* 56 = copyfd */
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no_sys, /* 57 = unused */
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no_sys, /* 58 = unused */
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do_exec, /* 59 = execve */
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no_sys, /* 60 = umask */
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no_sys, /* 61 = chroot */
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do_set, /* 62 = setsid */
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do_get, /* 63 = getpgrp */
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do_itimer, /* 64 = itimer */
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do_get, /* 65 = getgroups */
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do_set, /* 66 = setgroups */
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do_getmcontext, /* 67 = getmcontext */
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do_setmcontext, /* 68 = setmcontext */
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no_sys, /* 69 = unused */
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no_sys, /* 70 = unused */
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do_sigaction, /* 71 = sigaction */
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do_sigsuspend, /* 72 = sigsuspend */
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do_sigpending, /* 73 = sigpending */
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do_sigprocmask, /* 74 = sigprocmask */
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do_sigreturn, /* 75 = sigreturn */
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do_reboot, /* 76 = reboot */
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do_svrctl, /* 77 = svrctl */
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do_sysuname, /* 78 = sysuname */
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no_sys, /* 79 = unused */
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no_sys, /* 80 = (getdents) */
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no_sys, /* 81 = unused */
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no_sys, /* 82 = (getvfsstat) */
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no_sys, /* 83 = unused */
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no_sys, /* 84 = unused */
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no_sys, /* 85 = (select) */
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no_sys, /* 86 = (fchdir) */
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no_sys, /* 87 = (fsync) */
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do_getsetpriority, /* 88 = getpriority */
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do_getsetpriority, /* 89 = setpriority */
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do_time, /* 90 = gettimeofday */
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do_set, /* 91 = seteuid */
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do_set, /* 92 = setegid */
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no_sys, /* 93 = (truncate) */
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no_sys, /* 94 = (ftruncate) */
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no_sys, /* 95 = (fchmod) */
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no_sys, /* 96 = (fchown) */
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no_sys, /* 97 = unused */
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do_sprofile, /* 98 = sprofile */
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do_cprofile, /* 99 = cprofile */
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do_newexec, /* 100 = newexec */
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do_srv_fork, /* 101 = srv_fork */
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do_execrestart, /* 102 = exec_restart */
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no_sys, /* 103 = unused */
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do_getprocnr, /* 104 = getprocnr */
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no_sys, /* 105 = unused */
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do_get, /* 106 = issetugid */
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do_getepinfo_o, /* 107 = getepinfo XXX: old implementation*/
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no_sys, /* 108 = (utimens) */
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no_sys, /* 109 = unused */
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no_sys, /* 110 = unused */
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do_srv_kill, /* 111 = srv_kill */
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no_sys, /* 112 = gcov_flush */
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do_get, /* 113 = getsid */
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do_getres, /* 114 = clock_getres */
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do_gettime, /* 115 = clock_gettime */
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do_settime, /* 116 = clock_settime */
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no_sys, /* 117 = (vmcall) */
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no_sys, /* 118 = unsused */
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no_sys, /* 119 = unsused */
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no_sys, /* 120 = unsused */
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no_sys, /* 121 = (task reply) */
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no_sys, /* 122 = (map driver ) */
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do_getrusage, /* 123 = getrusage */
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no_sys, /* 124 = (checkperms) */
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};
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/* This should not fail with "array size is negative": */
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extern int dummy[sizeof(call_vec) == NCALLS * sizeof(call_vec[0]) ? 1 : -1];
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