50b06261b6
Implemented by changing write_map to accept a WMAP_FREE flag. In that case, it doesn't update the datablock (creating indirect zones as necessary) pointer, but it frees the datablock if present. Also it frees the single and double indirect blocks if unused. This makes the implementation of truncate_inode() simpler. truncate_inode() now accepts a truncation length which makes implementing truncate() and ftruncate() simple. This also allowed implementing the F_FREESP fcntl().
88 lines
2.2 KiB
C
Executable file
88 lines
2.2 KiB
C
Executable file
#define NCALLS 95 /* number of system calls allowed */
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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 CREAT 8
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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 STAT 18
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#define LSEEK 19
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#define 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 FSTAT 28
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#define PAUSE 29
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#define UTIME 30
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#define ACCESS 33
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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 DUP 41
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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 LSTAT 50
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#define IOCTL 54
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#define FCNTL 55
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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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/* The following are not system calls, but are processed like them. */
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#define UNPAUSE 65 /* to MM or FS: check for EINTR */
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#define REVIVE 67 /* to FS: revive a sleeping process */
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#define TASK_REPLY 68 /* to FS: reply code from tty task */
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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 /* to PM */
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/* MINIX specific calls, e.g., to support system services. */
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#define SVRCTL 77
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/* unused */
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#define GETSYSINFO 79 /* to PM or FS */
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#define GETPROCNR 80 /* to PM */
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#define DEVCTL 81 /* to FS */
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#define FSTATFS 82 /* to FS */
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#define ALLOCMEM 83 /* to PM */
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#define FREEMEM 84 /* to PM */
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#define SELECT 85 /* to FS */
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#define FCHDIR 86 /* to FS */
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#define FSYNC 87 /* to FS */
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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 TRUNCATE 93 /* to FS */
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#define FTRUNCATE 94 /* to FS */
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