Attachment 158107 Details for Bug 212203 – Reproducer

Reproducer

test_bz212203.c (text/x-csrc), 1.18 KB, created by Sachin Prabhu on 2007-06-28 10:47:13 UTC

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Filename:

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Creator: Sachin Prabhu

Created: 2007-06-28 10:47:13 UTC

Size: 1.18 KB

patch

obsolete

>#include <stdio.h>
>#include <unistd.h>
>#include <stdlib.h>
>#include <fcntl.h>
>#include <sys/types.h>
>#include <sys/stat.h>
>#include <string.h>
>
>
>int main(int argc, char **argv)
>{
>	int fd;
>	char *teststr="Testing 123\n";
>	int buflen = strlen(teststr);
>	char readbuf[buflen];
>	int readbytes=0;
>	struct flock lock;
>
>	lock.l_type   = F_WRLCK;
>	lock.l_whence = SEEK_SET;
>	lock.l_start  = 0;
>	lock.l_len    = buflen;
>
>	
>	
>	if( argc < 2 ){
>		fprintf(stderr, "Usage: %s <filename>\n", argv[0] );
>		exit(1);
>	}
>	
>//	printf("Opening file ... ");
>	if( ( fd = open( argv[1], O_RDWR|O_CREAT|O_EXCL, S_IRWXU ) ) == -1  ){
>		perror("open");
>		exit(1);
>	}
>//	printf("done\n");
>
>	lseek(fd, 0, SEEK_SET);
>//	printf("Locking file ... ");
>	if( fcntl( fd, F_SETLK, &lock ) == -1 ){
>		perror("fcntl");
>		exit(1);
>	}
>//	printf("done\n");
>
>	lseek(fd, 0, SEEK_SET);
>//	printf("Writing to file ... ");
>	if( write( fd, teststr, buflen ) == -1 ){
>		perror("write");
>		exit(1);
>	}
>//	printf("done\n");
>		
>	lseek(fd, 0, SEEK_SET);
>//	printf("Reading from file ... ");
>	if( (readbytes = (int) read( fd, readbuf, buflen ) ) == -1 ) {
>		perror("read");
>		exit(1);
>	}
>//	printf("done\n");
>	printf("Bytes Read = %d\n", readbytes);
>		
>	return 0;
>}

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Attachments on bug 212203: 158107 | 433497