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error when seeking on a tty (LinkIIgs)

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This commit is contained in:
Kelvin Sherlock 2013-02-16 18:13:34 -05:00
parent feee4d5809
commit 93fd6cb58c
1 changed files with 23 additions and 1 deletions
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24
mpw/mpw_ioctl.cpp
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@ -217,6 +217,13 @@ namespace MPW
int fd = f.cookie;
/*
* LinkIIgs does a seek on stdin. If it doesn't cause an
* error, then it attempts to read a list of files from stdin,
* which causes problems.
* (Get_Standard_Input -> fseek -> lseek -> ioctl )
* to compensate, error out if isatty.
*/
// TODO - MacOS returns eofERR and sets mark to eof
// if seeking past the eof.
@ -237,18 +244,33 @@ namespace MPW
return kEINVAL;
}
fprintf(stderr, " seek(%02x, %08x, %02x)\n", fd, offset, nativeWhence);
fprintf(stderr, " lseek(%02x, %08x, %02x)\n", fd, offset, nativeWhence);
if (::isatty(fd))
{
off_t rv = -1;
d0 = kEINVAL;
f.error = 0;
memoryWriteLong(rv, arg + 4);
memoryWriteWord(f.error, parm + 2);
return d0;
}
off_t rv = ::lseek(fd, offset, nativeWhence);
if (rv < 0)
{
d0 = errno_to_errno(errno);
f.error = 0;
perror(NULL);
}
else
{
d0 = 0;
f.error = 0;
fprintf(stderr, "-> %lld\n", rv);
}
memoryWriteLong(rv, arg + 4);