76 lines
2.9 KiB
HTML
76 lines
2.9 KiB
HTML
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<head>
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<title>getuser(3) - Plan 9 from User Space</title>
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<meta content="text/html; charset=utf-8" http-equiv=Content-Type>
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</head>
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<body bgcolor=#ffffff>
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<table border=0 cellpadding=0 cellspacing=0 width=100%>
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<tr height=10><td>
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<tr><td width=20><td>
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<tr><td width=20><td><b>GETUSER(3)</b><td align=right><b>GETUSER(3)</b>
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<tr><td width=20><td colspan=2>
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<br>
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<p><font size=+1><b>NAME </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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getuser, sysname – get user or system name<br>
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</table>
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<p><font size=+1><b>SYNOPSIS </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<tt><font size=+1>#include <u.h><br>
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#include <libc.h>
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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</font></tt>
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<tt><font size=+1>char* getuser(void)
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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</font></tt>
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<tt><font size=+1>char* sysname(void)<br>
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</font></tt>
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</table>
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<p><font size=+1><b>DESCRIPTION </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<i>Getuser</i> returns a pointer to static data which contains the null-terminated
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name of the user who owns the current process. <i>Getuser</i> calls <a href="../man2/getuid.html"><i>getuid</i>(2)</a>
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and then reads <tt><font size=+1>/etc/passwd</font></tt> to find the corresponding name.
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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<i>Sysname</i> returns a pointer to static data which contains the name
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of the machine on which the current process is running. <i>Sysname</i>
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looks first for an environment variable <tt><font size=+1>$sysname</font></tt>. If there is
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no such variable, <i>sysname</i> calls <a href="../man2/gethostname.html"><i>gethostname</i>(2)</a> and truncates the
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returned name at the first dot. If <i>gethostname</i> fails,
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<i>sysname</i> returns the default name <tt><font size=+1>gnot</font></tt>.
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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Unlike <i>getuser</i>, <i>sysname</i> caches the string, deriving the host name
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only once.<br>
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</table>
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<p><font size=+1><b>SOURCE </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<tt><font size=+1>/usr/local/plan9/src/lib9/getuser.c<br>
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/usr/local/plan9/src/lib9/sysname.c<br>
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</font></tt>
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</table>
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<td width=20>
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<tr height=20><td>
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</table>
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<!-- TRAILER -->
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<table border=0 cellpadding=0 cellspacing=0 width=100%>
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<tr height=15><td width=10><td><td width=10>
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<tr><td><td>
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<center>
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<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a>
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</center>
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</table>
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<!-- TRAILER -->
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</body></html>
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