Advanced Programming in the UNIX® Environment

ptg10805159

Appendix A Function Prototypes 889

int tcgetattr(intfd,struct termios *termptr);

<termios.h> p. 683

Returns: 0 if OK,−1 on error

pid_t tcgetpgrp(intfd);

<unistd.h> p. 298

Returns: process group ID of foreground process group if OK,

−1 on error

pid_t tcgetsid(intfd);

<termios.h> p. 299

Returns: session leader’s process group ID if OK,−1 on error

int tcsendbreak(intfd,intduration);

<termios.h> p. 693

Returns: 0 if OK,−1 on error

int tcsetattr(intfd,intopt,const struct termios *termptr);

<termios.h> p. 683

opt:TCSANOW, TCSADRAIN, TCSAFLUSH

Returns: 0 if OK,−1 on error

int tcsetpgrp(intfd,pid_tpgrpid);

<unistd.h> p. 298

Returns: 0 if OK,−1 on error

long telldir(DIR *dp);

<dirent.h> p. 130

Returns: current location in directory associated withdp

time_t time(time_t *calptr);

<time.h> p. 189

Returns: value of time if OK,−1 on error

clock_t times(struct tms *buf);

<sys/times.h> p. 280

Returns: elapsed wall clock time in clock ticks if OK,

−1 on error

FILE *tmpfile(void);

<stdio.h> p. 167

Returns: file pointer if OK,NULLon error

char *tmpnam(char *ptr);

<stdio.h> p. 167

Returns: pointer to unique pathname,NULLon error