Adaptations to new test results and discussions
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@ -154,7 +154,8 @@ device files with combinations of read-write, O_EXCL, and fcntl().
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(This does not mean that Ted endorsed our project yet. He helps exploring.)
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Friendly in the sense of DDLP-A would be any run which uses at least one of
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the options -e (i.e. O_EXCL) or -f (i.e. F_SETLK).
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the options -e (i.e. O_EXCL) or -f (i.e. F_SETLK, applied to a file
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descriptor which was obtained from a standard device file path).
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The code is available under GPL at
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http://libburnia.pykix.org/browser/libburn/trunk/test/open-cd-excl.c?format=txt
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To be compiled by
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@ -109,16 +109,10 @@ int main(int argc, char **argv)
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printf("fcntl lock apparently %sLOCKED\n",
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(fl.l_type == F_UNLCK) ? "NOT " : "");
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/* ts A70418: do not try to lock if it is already locked */
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if (fl.l_type != F_UNLCK) {
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printf("failed\n");
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exit(1);
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}
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init_flock(&fl, do_rdwr);
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printf("Trying to grab fcntl lock...\n");
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if (fcntl(fd, F_SETLKW, &fl) < 0) {
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perror("fcntl: F_SETLKW: ");
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if (fcntl(fd, F_SETLK, &fl) < 0) {
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perror("fcntl: F_SETLK: ");
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printf("failed\n");
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exit(1);
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}
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@ -127,6 +121,7 @@ int main(int argc, char **argv)
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/* ts A70417: added end_immediately */
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printf("Holding %s open.\n", device_name);
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usleep(100000);
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if (end_immediately)
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exit(0);
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printf("Press ^C to exit.\n");
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