Author: brooks Date: Tue Dec 18 12:44:38 2018 New Revision: 342190 URL: https://svnweb.freebsd.org/changeset/base/342190
Log: const poison the `new` pointer of __sysctl. Reviewed by: kib Obtained from: CheriBSD Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D18444 Modified: head/sys/compat/freebsd32/syscalls.master head/sys/kern/kern_sysctl.c head/sys/kern/syscalls.master head/sys/sys/sysctl.h Modified: head/sys/compat/freebsd32/syscalls.master ============================================================================== --- head/sys/compat/freebsd32/syscalls.master Tue Dec 18 09:16:04 2018 (r342189) +++ head/sys/compat/freebsd32/syscalls.master Tue Dec 18 12:44:38 2018 (r342190) @@ -388,7 +388,7 @@ uint32_t length1, uint32_t length2); } 202 AUE_SYSCTL STD { int freebsd32___sysctl(int *name, \ u_int namelen, void *old, \ - uint32_t *oldlenp, void *new, \ + uint32_t *oldlenp, const void *new, \ uint32_t newlen); } 203 AUE_MLOCK NOPROTO { int mlock(const void *addr, \ size_t len); } Modified: head/sys/kern/kern_sysctl.c ============================================================================== --- head/sys/kern/kern_sysctl.c Tue Dec 18 09:16:04 2018 (r342189) +++ head/sys/kern/kern_sysctl.c Tue Dec 18 12:44:38 2018 (r342190) @@ -1772,7 +1772,7 @@ sysctl_new_kernel(struct sysctl_req *req, void *p, siz return (0); if (req->newlen - req->newidx < l) return (EINVAL); - bcopy((char *)req->newptr + req->newidx, p, l); + bcopy((const char *)req->newptr + req->newidx, p, l); req->newidx += l; return (0); } @@ -1898,7 +1898,7 @@ sysctl_new_user(struct sysctl_req *req, void *p, size_ return (EINVAL); WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL, "sysctl_new_user()"); - error = copyin((char *)req->newptr + req->newidx, p, l); + error = copyin((const char *)req->newptr + req->newidx, p, l); req->newidx += l; return (error); } @@ -2126,8 +2126,8 @@ sys___sysctl(struct thread *td, struct sysctl_args *ua */ int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, - size_t *oldlenp, int inkernel, void *new, size_t newlen, size_t *retval, - int flags) + size_t *oldlenp, int inkernel, const void *new, size_t newlen, + size_t *retval, int flags) { int error = 0, memlocked; struct sysctl_req req; Modified: head/sys/kern/syscalls.master ============================================================================== --- head/sys/kern/syscalls.master Tue Dec 18 09:16:04 2018 (r342189) +++ head/sys/kern/syscalls.master Tue Dec 18 12:44:38 2018 (r342190) @@ -1209,7 +1209,7 @@ u_int namelen, _Out_writes_bytes_opt_(*oldlenp) void *old, _Inout_opt_ size_t *oldlenp, - _In_reads_bytes_opt_(newlen) void *new, + _In_reads_bytes_opt_(newlen) const void *new, size_t newlen ); } __sysctl sysctl_args int Modified: head/sys/sys/sysctl.h ============================================================================== --- head/sys/sys/sysctl.h Tue Dec 18 09:16:04 2018 (r342189) +++ head/sys/sys/sysctl.h Tue Dec 18 12:44:38 2018 (r342190) @@ -165,7 +165,7 @@ struct sysctl_req { size_t oldlen; size_t oldidx; int (*oldfunc)(struct sysctl_req *, const void *, size_t); - void *newptr; + const void *newptr; size_t newlen; size_t newidx; int (*newfunc)(struct sysctl_req *, void *, size_t); @@ -1083,7 +1083,7 @@ int kernel_sysctlbyname(struct thread *td, char *name, size_t *oldlenp, void *new, size_t newlen, size_t *retval, int flags); int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, - size_t *oldlenp, int inkernel, void *new, size_t newlen, + size_t *oldlenp, int inkernel, const void *new, size_t newlen, size_t *retval, int flags); int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, int *nindx, struct sysctl_req *req); _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
