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dtprintinfo: don't use rresvport() on Linux systems using the musl C library

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Disable binding a privileged client port with rresvport() on Linux
systems using the musl C library, where that function is
unsupported. If there is a need for XPrint support, a BSD-licensed
implementation of rresvport() is available in the portable edition of
OpenSSH.
This commit is contained in:
Lev Kujawski 2021-01-06 12:26:40 -07:00 • committed by Jon Trulson
parent f7227e1b74
commit 9a695e9411
1 changed files with 9 additions and 1 deletions
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10
cde/programs/dtprintinfo/objects/PrintObj/ParseJobs.C
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@ -195,8 +195,16 @@ int ConnectToPrintServer(const char *rhost, int timeout)
// run as user's UID, but with privileges from root
SETEUID(0);
// Try connecting to the server.
// Try connecting to the server from a privileged port.
/* FIXME: Test for the presence of rresvport and provide a substitute
* if necessary. Linux C library support:
* dietlibc: no rresvport, defines __dietlibc__
* musl: no rresvport
* uclibc: rresvport, defines __GLIBC__
*/
#if !defined(__linux__) || defined(__GLIBC__)
s = rresvport(&lport);
#endif
signal(SIGALRM, connect_timeout);
if (timeout > 0)