NLSGETCALL(3N-SVR4) RISC/os Reference Manual  NLSGETCALL(3N-SVR4)



NAME
     nlsgetcall - get client's data passed via the listener

SYNOPSIS
     #include <sys/tiuser.h>

     struct t_call *nlsgetcall (int fd);

DESCRIPTION
     nlsgetcall allows server processes started by the listener
     process to access the client's t_call structure, that is,
     the sndcall argument of t_connect(3N).

     The t_call structure returned by nlsgetcall can be released
     using t_free(3N).

     nlsgetcall returns the address of an allocated t_call struc-
     ture or NULL if a t_call structure cannot be allocated.  If
     the t_alloc succeeds, undefined environment variables are
     indicated by a negative len field in the appropriate netbuf
     structure. A len field of zero in the netbuf structure is
     valid and means that the original buffer in the listener's
     t_call structure was NULL.

WARNING
     The len field in the netbuf structure is defined as being
     unsigned.  In order to check for error returns, it should
     first be cast to an int.

     The listener process limits the amount of user data (udata)
     and options data (opt) to 128 bytes each. Address data addr
     is limited to 64 bytes.  If the original data was longer, no
     indication of overflow is given.

DIAGNOSTICS
     A NULL pointer is returned if a t_call structure cannot be
     allocated by t_alloc. t_errno can be inspected for further
     error information.  Undefined environment variables are
     indicated by a negative length field (len) in the appropri-
     ate netbuf structure.

FILES
     /usr/lib/libnsl_s.a
     /usr/lib/libslan.a
     /usr/lib/libnls.a

SEE ALSO
     nlsadmin(1), getenv(3), t_connect(3N), t_alloc(3N),
     t_free(3N), t_error(3N).

NOTES
     Server processes must call t_sync(3N) before calling this



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NLSGETCALL(3N-SVR4) RISC/os Reference Manual  NLSGETCALL(3N-SVR4)



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