Date: Wed, 15 Apr 2020 20:26:41 +0000 (UTC) From: Brooks Davis <brooks@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r359990 - head/lib/libc/gen Message-ID: <202004152026.03FKQf3B095733@repo.freebsd.org>
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Author: brooks Date: Wed Apr 15 20:26:41 2020 New Revision: 359990 URL: https://svnweb.freebsd.org/changeset/base/359990 Log: Support AT_PS_STRINGS in _elf_aux_info(). This will be used by setproctitle(). Reviewed by: kib Obtained from: CheriBSD Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D24407 Modified: head/lib/libc/gen/auxv.c Modified: head/lib/libc/gen/auxv.c ============================================================================== --- head/lib/libc/gen/auxv.c Wed Apr 15 20:25:38 2020 (r359989) +++ head/lib/libc/gen/auxv.c Wed Apr 15 20:26:41 2020 (r359990) @@ -70,7 +70,7 @@ static pthread_once_t aux_once = PTHREAD_ONCE_INIT; static int pagesize, osreldate, canary_len, ncpus, pagesizes_len, bsdflags; static int hwcap_present, hwcap2_present; static char *canary, *pagesizes, *execpath; -static void *timekeep; +static void *ps_strings, *timekeep; static u_long hwcap, hwcap2; #ifdef __powerpc__ @@ -135,6 +135,10 @@ init_aux(void) case AT_TIMEKEEP: timekeep = aux->a_un.a_ptr; break; + + case AT_PS_STRINGS: + ps_strings = aux->a_un.a_ptr; + break; #ifdef __powerpc__ /* * Since AT_STACKPROT is always set, and the common @@ -334,6 +338,16 @@ _elf_aux_info(int aux, void *buf, int buflen) if (buflen == sizeof(int)) { *(int *)buf = bsdflags; res = 0; + } else + res = EINVAL; + break; + case AT_PS_STRINGS: + if (buflen == sizeof(void *)) { + if (ps_strings != NULL) { + *(void **)buf = ps_strings; + res = 0; + } else + res = ENOENT; } else res = EINVAL; break;
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