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Better handling of read attempt on pseudo-drive without read-permission

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This commit is contained in:
Thomas Schmitt
2011-03-24 18:21:31 +00:00
parent 8da5da069e
commit e7ae52d582
4 changed files with 22 additions and 6 deletions
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18
libburn/trunk/libburn/read.c
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@ -423,14 +423,24 @@ int burn_read_data(struct burn_drive *d, off_t byte_address,
d->stdio_fd = fd =
open(d->devname, O_RDONLY | O_LARGEFILE);
if (fd == -1) {
if (errno != ENOENT || !(flag & 2))
if (errno == EACCES && (flag & 2)) {
if (!(flag & 8))
libdax_msgs_submit(libdax_messenger,
d->global_index, 0x00020183,
LIBDAX_MSGS_SEV_WARNING,
LIBDAX_MSGS_PRIO_HIGH,
"Failed to open device (a pseudo-drive) for reading",
errno, 0);
} else if (errno!= ENOENT || !(flag & 2))
libdax_msgs_submit(libdax_messenger,
d->global_index,
0x00020005,
d->global_index, 0x00020005,
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
"Failed to open device (a pseudo-drive) for reading",
errno, 0);
ret = 0; goto ex;
ret = 0;
if (errno == EACCES && (flag & 8))
ret= -2;
goto ex;
}
if (lseek(fd, byte_address, SEEK_SET) == -1) {
if (!(flag & 2)) {