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newlib-cygwin
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Cygwin: unlink: filter out virtual files and devices early on 

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2022-02-22 13:32:29 +01:00
parent 4ec08891a0
commit f2dc492df0
2 changed files with 6 additions and 1 deletions
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1
winsup/cygwin/devices.h
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@ -433,6 +433,7 @@ extern const _device dev_fs_storage;
#define iscygdrive_dev(devn) (devn == FH_CYGDRIVE) #define iscygdrive_dev(devn) (devn == FH_CYGDRIVE)
#define isdev_dev(devn) (devn == FH_DEV) #define isdev_dev(devn) (devn == FH_DEV)
#define isdevfd_dev(devn) (devn == FH_DEV_FD)
#define isprocsys_dev(devn) (devn == FH_PROCSYS) #define isprocsys_dev(devn) (devn == FH_PROCSYS)

6
winsup/cygwin/syscalls.cc
View File

@ -1123,7 +1123,11 @@ unlink (const char *ourname)
set_errno (EROFS); set_errno (EROFS);
goto done; goto done;
} }
if (isdevfd_dev (devn) || (win32_name.isdevice () && !win32_name.issocket ()))
{
set_errno (EPERM);
goto done;
}
if (!win32_name.exists ()) if (!win32_name.exists ())
{ {
debug_printf ("unlinking a nonexistent file"); debug_printf ("unlinking a nonexistent file");