Advanced Programming in the UNIX® Environment

ptg10805159

Appendix A Function Prototypes 853

int fflush(FILE *fp);

<stdio.h> p. 147

Returns: 0 if OK,EOFon error

int fgetc(FILE *fp);

<stdio.h> p. 150

Returns: next character if OK,EOFon end of file or error

int fgetpos(FILE *restrictfp,fpos_t *restrictpos);

<stdio.h> p. 158

Returns: 0 if OK, nonzero on error

char *fgets(char *restrictbuf,intn,FILE *restrictfp);

<stdio.h> p. 152

Returns:bufif OK,NULLon end of file or error

int fileno(FILE *fp);

<stdio.h> p. 164

Returns: file descriptor associated with the stream,−1 on error

void flockfile(FILE *fp);

<stdio.h> p. 443

FILE *fmemopen(void *restrictbuf,size_tsize,

const char *restricttype);

<stdio.h> p. 171

type:"r", "w", "a", "r+", "w+", "a+"

Returns: stream pointer if OK,NULLon error

FILE *fopen(const char *restrictpath,const char *restricttype);

<stdio.h> p. 148

type:"r", "w", "a", "r+", "w+", "a+"

Returns: file pointer if OK,NULLon error

pid_t fork(void);

<unistd.h> p. 229

Returns: 0 in child, process ID of child in parent,−1 on error

long fpathconf(intfd,intname);

<unistd.h> p. 42

name:_PC_ASYNC_IO, _PC_CHOWN_RESTRICTED,

_PC_FILESIZEBITS, _PC_LINK_MAX,

_PC_MAX_CANON, _PC_MAX_INPUT,

_PC_NAME_MAX, _PC_NO_TRUNC, _PC_PATH_MAX,

_PC_PIPE_BUF, _PC_PRIO_IO, _PC_SYMLINK_MAX,

_PC_SYNC_IO, _PC_TIMESTAMP_RESOLUTION,

_PC_2_SYMLINKS, _PC_VDISABLE

Returns: corresponding value if OK,−1 on error