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RedHat 9 (Linux i386) - man page for bindresvport (redhat section 3)

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       bindresvport - bind a socket to a privileged IP port

       #include <sys/types.h>
       #include <netinet/in.h>

       int bindresvport(sd, sin)
       int sd;
       struct sockaddr_in *sin;

       bindresvport()  is  used  to  bind a socket descriptor to a privileged IP port, that is, a
       port number in the range 0-1023.  The routine returns 0 if it is successful, otherwise  -1
       is returned and errno set to reflect the cause of the error.

       Only root can bind to a privileged port; this call will fail for any other users.

					    1987-11-22				  BINDRESVPORT(3)
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