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Red Hat Bugzilla – Attachment 197201 Details for
Bug 204309
kernel retries portmap query indefinitely when statd is down
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fcntl() simulation that hangs on a "bad" kernels
lock-nfs-bug.c (text/plain), 788 bytes, created by
Alexey Roytman
on 2007-09-17 08:34:23 UTC
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Description:
fcntl() simulation that hangs on a "bad" kernels
Filename:
MIME Type:
Creator:
Alexey Roytman
Created:
2007-09-17 08:34:23 UTC
Size:
788 bytes
patch
obsolete
>/* Testing NFS bug: cannot login to KDE if nome directory is on NFS > and statd is not running on NFS client. */ > >#include <unistd.h> >#include <fcntl.h> >#include <errno.h> >#include <stdio.h> >#include <string.h> > >int test(const char * filename) >{ > int e; > struct flock fl; > int fd; > printf("testing %s...\n",filename); > fd = open(filename,O_RDWR|O_CREAT,0600); > if (fd < 0) { > perror("open"); > return -1; > } > > fl.l_whence = SEEK_SET; > fl.l_start = 0; > fl.l_len = 0; > fl.l_type = F_RDLCK; > printf("fcntl (may hang!)...\n"); > e = fcntl(fd,F_SETLKW,&fl); > printf("fcntl (did not hang, no bug) ==> %d (%d:%s)\n",e,errno,strerror(errno)); > close(fd); > return 0; >} >int main(int argc, char * argv[]) >{ > printf("%s: pid=%d\n",argv[0],getpid()); > > if (argc != 1) > test(argv[1]); > return 0; >} >
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