©2004 by Marc J. Rochkind. All rights reserved. Portions marked "Open Source" may be copied under license.

 

                 

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c7/f3.c File Reference

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Detailed Description

File locking (lockf) [Sec. 7.11.3].

Definition in file f3.c.

Go to the source code of this file.

Compounds
struct	rec
Defines
#define	DBNAME   "termdb"
Functions
bool	readrec (int dbfd, struct rec *r, off_t off)
bool	writerec (int dbfd, struct rec *r, off_t off)
bool	store (int dbfd, int data)
void	process1 (void)
void	process2 (void)
int	main (void)

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Define Documentation

#define DBNAME   "termdb"

Definition at line 97 of file f3.c.

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Function Documentation

int main (  void   )

Definition at line 155 of file f3.c. References EC_CLEANUP_BGN, EC_CLEANUP_END, ec_neg1, exit(), fork(), process1(), process2(), and waitpid().

void process1 (  void   )  [static]

Definition at line 99 of file f3.c. References close(), DBNAME, EC_CLEANUP_BGN, EC_CLEANUP_END, ec_false, ec_neg1, exit(), open(), PERM_FILE, store(), and writerec().

void process2 (  void   )  [static]

Definition at line 116 of file f3.c. References close(), DBNAME, EC_CLEANUP_BGN, EC_CLEANUP_END, EC_FAIL, ec_false, ec_neg1, errno, exit(), lockf(), lseek(), open(), rec::r_data, rec::r_next, and readrec().

bool readrec (  int  dbfd, struct rec *  r, off_t  off )

Definition at line 29 of file f3.c. References EC_CLEANUP_BGN, EC_CLEANUP_END, EC_FAIL, errno, and pread(). Referenced by process2(), and store().

bool store (  int  dbfd, int  data )

Definition at line 63 of file f3.c. References EC_CLEANUP_BGN, EC_CLEANUP_END, ec_false, ec_neg1, lockf(), lseek(), rec::r_data, rec::r_next, readrec(), usleep(), and writerec(). Referenced by process1().

bool writerec (  int  dbfd, struct rec *  r, off_t  off )

Definition at line 46 of file f3.c. References EC_CLEANUP_BGN, EC_CLEANUP_END, EC_FAIL, errno, and pwrite(). Referenced by process1(), and store().

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