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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2022-11-17 15:19:10 +0000 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2022-11-17 15:32:23 +0000 |
| commit | 187b3dd4263cccc0087df3c4311ded95d866d116 (patch) | |
| tree | b8907ce6b1be36a0c9cc66e4c0238d4766ccecb7 | |
| parent | f4c913ed552252ca91690e6c73ea02b10e263509 (diff) | |
| download | glibc-187b3dd4263cccc0087df3c4311ded95d866d116.zip glibc-187b3dd4263cccc0087df3c4311ded95d866d116.tar.gz glibc-187b3dd4263cccc0087df3c4311ded95d866d116.tar.bz2 | |
cheri: Fix pselect signal mask argument
The signal mask argument is passed as a struct with a pointer and size
in the linux syscall abi, but the types used in glibc were wrong for
CHERI due to an x32 specific hack.
| -rw-r--r-- | sysdeps/unix/sysv/linux/pselect.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/pselect.c b/sysdeps/unix/sysv/linux/pselect.c index eba1c11..553de0a 100644 --- a/sysdeps/unix/sysv/linux/pselect.c +++ b/sysdeps/unix/sysv/linux/pselect.c @@ -27,12 +27,19 @@ pselect64_syscall (int nfds, fd_set *readfds, fd_set *writefds, # define __NR_pselect6_time64 __NR_pselect6 #endif /* NB: This is required by ARGIFY used in x32 internal_syscallN. */ - __syscall_ulong_t data[2] = - { - (uintptr_t) sigmask, __NSIG_BYTES - }; +#ifdef __CHERI_PURE_CAPABILITY__ + typedef uintptr_t kernel_ptr_t; + typedef size_t kernel_size_t; +#else + typedef __syscall_ulong_t kernel_ptr_t; + typedef __syscall_ulong_t kernel_size_t; +#endif + struct { + kernel_ptr_t ptr; + kernel_size_t size; + } data = { (uintptr_t) sigmask, __NSIG_BYTES }; return SYSCALL_CANCEL (pselect6_time64, nfds, readfds, writefds, exceptfds, - timeout, data); + timeout, &data); } int |