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121 lines
3.5 KiB
121 lines
3.5 KiB
2 years ago
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commit 2139b1848e3e0a960ccc615fe1fd78b5d10b1411
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Thu Feb 3 10:58:59 2022 +0100
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Linux: Remove HAVE_AUX_SECURE, HAVE_AUX_XID, HAVE_AUX_PAGESIZE
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They are always defined.
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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(cherry picked from commit b9c3d3382f6f50e9723002deb2dc8127de720fa6)
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diff --git a/sysdeps/unix/sysv/linux/dl-sysdep.c b/sysdeps/unix/sysv/linux/dl-sysdep.c
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index 3e41469bcc395179..aae983777ba15fae 100644
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--- a/sysdeps/unix/sysv/linux/dl-sysdep.c
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+++ b/sysdeps/unix/sysv/linux/dl-sysdep.c
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@@ -85,21 +85,6 @@ _dl_sysdep_start (void **start_argptr,
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ElfW(Word) phnum = 0;
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ElfW(Addr) user_entry;
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ElfW(auxv_t) *av;
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-#ifdef HAVE_AUX_SECURE
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-# define set_seen(tag) (tag) /* Evaluate for the side effects. */
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-# define set_seen_secure() ((void) 0)
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-#else
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- uid_t uid = 0;
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- gid_t gid = 0;
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- unsigned int seen = 0;
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-# define set_seen_secure() (seen = -1)
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-# ifdef HAVE_AUX_XID
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-# define set_seen(tag) (tag) /* Evaluate for the side effects. */
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-# else
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-# define M(type) (1 << (type))
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-# define set_seen(tag) seen |= M ((tag)->a_type)
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-# endif
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-#endif
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#ifdef NEED_DL_SYSINFO
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uintptr_t new_sysinfo = 0;
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#endif
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@@ -116,7 +101,7 @@ _dl_sysdep_start (void **start_argptr,
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"CONSTANT_MINSIGSTKSZ is constant");
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GLRO(dl_minsigstacksize) = CONSTANT_MINSIGSTKSZ;
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- for (av = GLRO(dl_auxv); av->a_type != AT_NULL; set_seen (av++))
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+ for (av = GLRO(dl_auxv); av->a_type != AT_NULL; av++)
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switch (av->a_type)
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{
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case AT_PHDR:
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@@ -131,20 +116,7 @@ _dl_sysdep_start (void **start_argptr,
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case AT_ENTRY:
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user_entry = av->a_un.a_val;
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break;
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-#ifndef HAVE_AUX_SECURE
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- case AT_UID:
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- case AT_EUID:
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- uid ^= av->a_un.a_val;
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- break;
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- case AT_GID:
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- case AT_EGID:
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- gid ^= av->a_un.a_val;
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- break;
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-#endif
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case AT_SECURE:
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-#ifndef HAVE_AUX_SECURE
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- seen = -1;
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-#endif
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__libc_enable_secure = av->a_un.a_val;
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break;
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case AT_PLATFORM:
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@@ -183,31 +155,6 @@ _dl_sysdep_start (void **start_argptr,
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dl_hwcap_check ();
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-#ifndef HAVE_AUX_SECURE
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- if (seen != -1)
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- {
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- /* Fill in the values we have not gotten from the kernel through the
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- auxiliary vector. */
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-# ifndef HAVE_AUX_XID
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-# define SEE(UID, var, uid) \
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- if ((seen & M (AT_##UID)) == 0) var ^= __get##uid ()
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- SEE (UID, uid, uid);
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- SEE (EUID, uid, euid);
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- SEE (GID, gid, gid);
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- SEE (EGID, gid, egid);
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-# endif
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-
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- /* If one of the two pairs of IDs does not match this is a setuid
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- or setgid run. */
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- __libc_enable_secure = uid | gid;
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- }
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-#endif
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-
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-#ifndef HAVE_AUX_PAGESIZE
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- if (GLRO(dl_pagesize) == 0)
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- GLRO(dl_pagesize) = __getpagesize ();
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-#endif
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-
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#ifdef NEED_DL_SYSINFO
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if (new_sysinfo != 0)
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{
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diff --git a/sysdeps/unix/sysv/linux/ldsodefs.h b/sysdeps/unix/sysv/linux/ldsodefs.h
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index 7e01f685b03b984d..0f152c592c2a9b04 100644
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--- a/sysdeps/unix/sysv/linux/ldsodefs.h
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+++ b/sysdeps/unix/sysv/linux/ldsodefs.h
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@@ -24,16 +24,4 @@
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/* Get the real definitions. */
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#include_next <ldsodefs.h>
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-/* We can assume that the kernel always provides the AT_UID, AT_EUID,
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- AT_GID, and AT_EGID values in the auxiliary vector from 2.4.0 or so on. */
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-#define HAVE_AUX_XID
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-
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-/* We can assume that the kernel always provides the AT_SECURE value
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- in the auxiliary vector from 2.5.74 or so on. */
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-#define HAVE_AUX_SECURE
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-
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-/* Starting with one of the 2.4.0 pre-releases the Linux kernel passes
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- up the page size information. */
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-#define HAVE_AUX_PAGESIZE
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-
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#endif /* ldsodefs.h */
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