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
116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
#define NCALLS 125 /* number of system calls allowed */
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/* In case it isn't obvious enough: this list is sorted numerically. */
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#define EXIT 1
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#define FORK 2
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#define READ 3
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#define WRITE 4
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#define OPEN 5
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#define CLOSE 6
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#define WAIT 7
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#define LINK 9
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#define UNLINK 10
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#define WAITPID 11
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#define CHDIR 12
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#define TIME 13
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#define MKNOD 14
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#define CHMOD 15
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#define CHOWN 16
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#define BRK 17
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#define MINIX_GETPID 20
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#define MOUNT 21
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#define UMOUNT 22
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#define SETUID 23
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#define GETUID 24
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#define STIME 25
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#define PTRACE 26
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#define ALARM 27
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#define PAUSE 29
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#define UTIME 30
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#define GETEPINFO 31
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#define SETGROUPS 32
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#define ACCESS 33
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#define GETGROUPS 34
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#define SYNC 36
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#define KILL 37
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#define RENAME 38
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#define MKDIR 39
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#define RMDIR 40
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#define PIPE 42
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#define TIMES 43
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#define SYMLINK 45
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#define SETGID 46
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#define GETGID 47
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#define SIGNAL 48
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#define RDLNK 49
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#define STAT 51
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#define FSTAT 52
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#define LSTAT 53
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#define IOCTL 54
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#define COPYFD 56
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#define FS_READY 57
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#define PIPE2 58
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#define EXEC 59
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#define UMASK 60
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#define CHROOT 61
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#define SETSID 62
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#define GETPGRP 63
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#define ITIMER 64
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#define GETMCONTEXT 67
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#define SETMCONTEXT 68
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#define GETDENTS 69
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#define FTRUNCATE 70
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/* Posix signal handling. */
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#define SIGACTION 71
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#define SIGSUSPEND 72
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#define SIGPENDING 73
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#define SIGPROCMASK 74
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#define SIGRETURN 75
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#define REBOOT 76
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#define SVRCTL 77
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#define SYSUNAME 78
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#define LLSEEK 81 /* to VFS */
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#define GETVFSSTAT 82 /* to VFS */
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#define STATVFS1 83 /* to VFS */
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#define FSTATVFS1 84 /* to VFS */
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#define SELECT 85 /* to VFS */
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#define FCHDIR 86 /* to VFS */
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#define FSYNC 87 /* to VFS */
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#define GETPRIORITY 88 /* to PM */
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#define SETPRIORITY 89 /* to PM */
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#define GETTIMEOFDAY 90 /* to PM */
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#define SETEUID 91 /* to PM */
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#define SETEGID 92 /* to PM */
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#define FCHMOD 95 /* to VFS */
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#define FCHOWN 96 /* to VFS */
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#define LSEEK 97
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#define SPROF 98 /* to PM */
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#define CPROF 99 /* to PM */
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#define PM_NEWEXEC 100 /* from VFS or RS to PM: new exec */
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#define SRV_FORK 101 /* to PM: special fork call for RS */
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#define EXEC_RESTART 102 /* to PM: final part of exec for RS */
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#define GETPROCNR 104 /* to PM */
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#define ISSETUGID 106 /* to PM: ask if process is tainted */
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#define GETEPINFO_O 107 /* to PM: get pid/uid/gid of an endpoint */
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#define UTIMENS 108 /* to FS: [f]utimens(); also [fl]utimes */
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#define FCNTL 109 /* to VFS */
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#define TRUNCATE 110 /* to VFS */
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#define SRV_KILL 111 /* to PM: special kill call for RS */
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#define GCOV_FLUSH 112 /* flush gcov data from server to gcov files */
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#define PM_GETSID 113 /* PM getsid() */
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#define CLOCK_GETRES 114 /* clock_getres() */
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#define CLOCK_GETTIME 115 /* clock_gettime() */
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#define CLOCK_SETTIME 116 /* clock_settime() */
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#define VFS_VMCALL 117
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#define MAPDRIVER 122 /* to VFS, map a device */
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#define GETRUSAGE 123 /* to PM, VFS */
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#define VFS_CHECKPERMS 124 /* to VFS */
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