15 lines
719 B
C
15 lines
719 B
C
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/* Masks and flags for system calls. */
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#define SYSCALL_FUNC 0x0F /* mask for system call function */
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#define SYSCALL_FLAGS 0xF0 /* mask for system call flags */
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#define NON_BLOCKING 0x10 /* prevent blocking, return error */
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#define FRESH_ANSWER 0x20 /* ignore pending notifications as answer */
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/* (default behaviour for SENDREC calls) */
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/* System calls (numbers passed when trapping to the kernel) */
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#define ECHO 0 /* function code for echoing messages */
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#define SEND 1 /* function code for sending messages */
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#define RECEIVE 2 /* function code for receiving messages */
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#define SENDREC 3 /* function code for SEND + RECEIVE */
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#define NOTIFY 4 /* function code for notifications */
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