Advanced Programming in the UNIX® Environment

ptg10805159

862 Function Prototypes Appendix A

const

char *inet_ntop(intdomain,const void *restrictaddr,

char *restrictstr,socklen_tsize);

<arpa/inet.h> p. 596

Returns: pointer to address string on success,NULLon error

int inet_pton(intdomain,const char *restrictstr,

void *restrictaddr);

<arpa/inet.h> p. 596

Returns: 1 on success, 0 if the format is invalid, or−1 on error

int initgroups(const char *username,gid_tbasegid);

<grp.h> /* Linux & Solaris */ p. 184

<unistd.h> /* FreeBSD & Mac OS X */

Returns: 0 if OK,−1 on error

int ioctl(intfd,intrequest,...);

<unistd.h> /* System V */ p. 87

<sys/ioctl.h> /* BSD and Linux */

Returns:−1 on error,something else if OK

int isatty(intfd);

<unistd.h> p. 695

Returns: 1 (true) if terminal device, 0 (false) otherwise

int kill(pid_tpid,intsigno);

<signal.h> p. 337

Returns: 0 if OK,−1 on error

int lchown(const char *path,uid_towner,gid_tgroup);

<unistd.h> p. 109

Returns: 0 if OK,−1 on error

int link(const char *existingpath,const char *newpath);

<unistd.h> p. 116

Returns: 0 if OK,−1 on error

int linkat(intefd,const char *existingpath,intnfd,

const char *newpath,intflag);

<unistd.h> p. 116

flag:AT_SYMLINK_NOFOLLOW

Returns: 0 if OK,−1 on error