getusershell(3) - NetBSD Manual Pages

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GETUSERSHELL(3)           NetBSD Programmer's Manual           GETUSERSHELL(3)


NAME

     getusershell, setusershell, endusershell - get legal user shells


SYNOPSIS

     char *
     getusershell(void);

     void
     setusershell(void);

     void
     endusershell(void);


DESCRIPTION

     The getusershell() function returns a pointer to a legal user shell as
     defined by the system manager in the file /etc/shells. If /etc/shells is
     unreadable or does not exist, getusershell() behaves as if /bin/sh and
     /bin/csh were listed in the file.

     The getusershell() function reads the next line (opening the file if nec-
     essary); setusershell() rewinds the file; endusershell() closes it.


FILES

     /etc/shells


DIAGNOSTICS

     The routine getusershell() returns a null pointer (0) on EOF.


SEE ALSO

     shells(5)


HISTORY

     The getusershell() function appeared in 4.3BSD.


BUGS

     The getusershell() function leaves its result in an internal static ob-
     ject and returns a pointer to that object. Subsequent calls to
     getusershell() will modify the same object.

4.3 Berkeley Distribution        June 4, 1993                                1