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Annotation of lucent/sys/man/1/syscall, revision 1.1.1.1

1.1       root        1: .TH SYSCALL 1 
                      2: .SH NAME
                      3: syscall  \- test a system call
                      4: .SH SYNOPSIS
                      5: .B syscall
                      6: [
                      7: .B -o
                      8: ]
                      9: .I entry
                     10: [
                     11: .I arg ...
                     12: ]
                     13: .SH DESCRIPTION
                     14: .I Syscall
                     15: invokes the system call
                     16: .I entry
                     17: with the given arguments.
                     18: It prints the return value and the error string, if there was an error.
                     19: An argument is either an integer constant as in C (its value is passed),
                     20: a string (its address is passed),
                     21: or the literal
                     22: .B buf
                     23: (a pointer to a 1 Kbyte buffer is passed).
                     24: If
                     25: .B -o
                     26: is given, the contents of the 1 Kbyte buffer are printed as a zero-terminated string
                     27: after the system call is done.
                     28: .SH EXAMPLES
                     29: Write a string to standard output
                     30: .IP
                     31: .EX
                     32: syscall write 1 hello 5
                     33: .EE
                     34: .PP
                     35: Print the name of the file connected to standard input
                     36: .IP
                     37: .EX
                     38: syscall -o fstat 0 buf
                     39: .EE
                     40: .SH SOURCE
                     41: .B /sys/src/cmd/syscall
                     42: .SH "SEE ALSO"
                     43: Section 2 of this manual.
                     44: .SH DIAGNOSTICS
                     45: If
                     46: .I entry
                     47: is not a system call name, the exit status is
                     48: .LR unknown .
                     49: If the system call succeeds, the exit status is null;
                     50: otherwise the exit status is the string that
                     51: .IR errstr (2)
                     52: returns.

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