Advanced Programming in the UNIX® Environment

ptg10805159

Appendix A Function Prototypes 859

pid_t getpid(void);

<unistd.h> p. 228

Returns: process ID of calling process

pid_t getppid(void);

<unistd.h> p. 228

Returns: parent process ID of calling process

int getpriority(intwhich,id_twho);

<sys/resource.h> p. 277

which:PRIO_PROCESS, PRIO_PGRP, PRIO_USER

Returns: nice value between−NZEROandNZERO− 1 if OK,

−1 on error

struct

protoent *getprotobyname(const char *name);

<netdb.h> p. 598

Returns: pointer if OK,NULLon error

struct

protoent *getprotobynumber(intproto);

<netdb.h> p. 598

Returns: pointer if OK,NULLon error

struct

protoent *getprotoent(void);

<netdb.h> p. 598

Returns: pointer if OK,NULLon error

struct

passwd *getpwent(void);

<pwd.h> p. 180

Returns: pointer if OK,NULLon error or end of file

struct

passwd *getpwnam(const char *name);

<pwd.h> p. 179

Returns: pointer if OK,NULLon error

struct

passwd *getpwuid(uid_tuid);

<pwd.h> p. 179

Returns: pointer if OK,NULLon error