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* miscfuncs.cc (+__check_invalid_read_ptr_errno): New function.

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* syscalls.c (_write): Validate that write buffer is accessible for reading,
not writing.
* winsup.h: Declare new function, increase regparmization of check_* functions.
This commit is contained in:
Christopher Faylor
2001-10-20 05:08:21 +00:00
parent 5318c49833
commit 6fdd213161
4 changed files with 21 additions and 3 deletions
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5
winsup/cygwin/winsup.h
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@@ -191,8 +191,9 @@ void set_console_handler ();
int __stdcall check_null_empty_str (const char *name) __attribute__ ((regparm(1)));
int __stdcall check_null_empty_str_errno (const char *name) __attribute__ ((regparm(1)));
int __stdcall __check_null_invalid_struct (const void *s, unsigned sz) __attribute__ ((regparm(1)));
int __stdcall __check_null_invalid_struct_errno (const void *s, unsigned sz) __attribute__ ((regparm(1)));
int __stdcall __check_null_invalid_struct (const void *s, unsigned sz) __attribute__ ((regparm(2)));
int __stdcall __check_null_invalid_struct_errno (const void *s, unsigned sz) __attribute__ ((regparm(2)));
int __stdcall __check_invalid_read_ptr_errno (const void *s, unsigned sz) __attribute__ ((regparm(2)));
#define check_null_invalid_struct(s) \
__check_null_invalid ((s), sizeof (*(s)))