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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2021-02-01 19:39:48 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2021-02-01 19:39:48 +0100 |
| commit | 36231bee7ab36d59dd121ea85b91411ae86945f3 (patch) | |
| tree | 681ff9b1814deab75e5878f58d682e33d8833e4b /sysdeps/mach/hurd/ioctl.c | |
| parent | d5c8f98c5e6de207790d3e9edadf5bda4aa2521f (diff) | |
| download | glibc-36231bee7ab36d59dd121ea85b91411ae86945f3.tar.gz glibc-36231bee7ab36d59dd121ea85b91411ae86945f3.tar.xz glibc-36231bee7ab36d59dd121ea85b91411ae86945f3.zip | |
hurd TIOCFLUSH: Cope BSD 4.1 semantic
BSD 4.1 did not have an argument for TIOCFLUSH, BSD 4.2 added it. There are still a lot of applications out there that pass a NULL argument to TIOCFLUSH, so we should rather cope with it.
Diffstat (limited to 'sysdeps/mach/hurd/ioctl.c')
| -rw-r--r-- | sysdeps/mach/hurd/ioctl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/ioctl.c b/sysdeps/mach/hurd/ioctl.c index 662e8ee919..0d5bc176d1 100644 --- a/sysdeps/mach/hurd/ioctl.c +++ b/sysdeps/mach/hurd/ioctl.c @@ -113,6 +113,10 @@ __ioctl (int fd, unsigned long int request, ...) /* We don't want to advance ARG since it will be used to copy out too if IOC_OUT is also set. */ void *argptr = arg; + int zero = 0; + + if (request == TIOCFLUSH && !arg) + arg = &zero; /* Pack an argument into the message buffer. */ void in (unsigned int count, enum __ioctl_datum type) |