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| author | Kenneth Aafloy <devnull@localhost> | 2004-07-16 19:24:59 +0000 |
|---|---|---|
| committer | Kenneth Aafloy <devnull@localhost> | 2004-07-16 19:24:59 +0000 |
| commit | d5f028c00f096f00133f1c3134919d2a31e4e95d (patch) | |
| tree | c8e2937ea0359f975567dda468e95e6185775439 /linux | |
| parent | 2848c66d0366df1880b673ecadbaefcbf1448a86 (diff) | |
| download | mediapointer-dvb-s2-d5f028c00f096f00133f1c3134919d2a31e4e95d.tar.gz mediapointer-dvb-s2-d5f028c00f096f00133f1c3134919d2a31e4e95d.tar.bz2 | |
- Do not allow write (and related) ioctls when frontend is opened RDONLY.
Diffstat (limited to 'linux')
| -rw-r--r-- | linux/drivers/media/dvb/dvb-core/dvb_frontend.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/linux/drivers/media/dvb/dvb-core/dvb_frontend.c b/linux/drivers/media/dvb/dvb-core/dvb_frontend.c index 7748ba9b6..c68c57116 100644 --- a/linux/drivers/media/dvb/dvb-core/dvb_frontend.c +++ b/linux/drivers/media/dvb/dvb-core/dvb_frontend.c @@ -709,6 +709,11 @@ static int dvb_frontend_ioctl (struct inode *inode, struct file *file, if (!fe || !fe->frontend.ioctl || fe->exit) return -ENODEV; + if ((file->f_flags & O_ACCMODE) == O_RDONLY && + (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT || + cmd == FE_DISEQC_RECV_SLAVE_REPLY)) + return -EPERM; + if (down_interruptible (&fe->sem)) return -ERESTARTSYS; |