69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
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#ifndef __LIBS_UNISTD_H__
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#define __LIBS_UNISTD_H__
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#define T_SYSCALL 0x80
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/* syscall number */
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#define SYS_exit 1
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#define SYS_fork 2
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#define SYS_wait 3
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#define SYS_exec 4
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#define SYS_clone 5
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#define SYS_yield 10
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#define SYS_sleep 11
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#define SYS_kill 12
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#define SYS_gettime 17
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#define SYS_getpid 18
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#define SYS_mmap 20
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#define SYS_munmap 21
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#define SYS_shmem 22
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#define SYS_putc 30
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#define SYS_pgdir 31
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#define SYS_open 100
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#define SYS_close 101
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#define SYS_read 102
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#define SYS_write 103
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#define SYS_seek 104
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#define SYS_fstat 110
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#define SYS_fsync 111
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#define SYS_getcwd 121
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#define SYS_getdirentry 128
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#define SYS_dup 130
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/* OLNY FOR LAB6 */
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#define SYS_lab6_set_priority 255
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/* SYS_fork flags */
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#define CLONE_VM 0x00000100 // set if VM shared between processes
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#define CLONE_THREAD 0x00000200 // thread group
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#define CLONE_FS 0x00000800 // set if shared between processes
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/* VFS flags */
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// flags for open: choose one of these
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#define O_RDONLY 0 // open for reading only
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#define O_WRONLY 1 // open for writing only
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#define O_RDWR 2 // open for reading and writing
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// then or in any of these:
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#define O_CREAT 0x00000004 // create file if it does not exist
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#define O_EXCL 0x00000008 // error if O_CREAT and the file exists
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#define O_TRUNC 0x00000010 // truncate file upon open
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#define O_APPEND 0x00000020 // append on each write
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// additonal related definition
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#define O_ACCMODE 3 // mask for O_RDONLY / O_WRONLY / O_RDWR
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#define NO_FD -0x9527 // invalid fd
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/* lseek codes */
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#define LSEEK_SET 0 // seek relative to beginning of file
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#define LSEEK_CUR 1 // seek relative to current position in file
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#define LSEEK_END 2 // seek relative to end of file
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#define FS_MAX_DNAME_LEN 31
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#define FS_MAX_FNAME_LEN 255
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#define FS_MAX_FPATH_LEN 4095
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#define EXEC_MAX_ARG_NUM 32
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#define EXEC_MAX_ARG_LEN 4095
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#endif /* !__LIBS_UNISTD_H__ */
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