982b65b42a
- add upstream patches to fake $0 in /proc/self/maps (fixes ps) OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=37
54 lines
1.6 KiB
Diff
54 lines
1.6 KiB
Diff
From 059e727a9a4be00de949769105e9e0ea876fc64b Mon Sep 17 00:00:00 2001
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From: Alexander Graf <agraf@suse.de>
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Date: Wed, 2 Nov 2011 09:23:24 +0000
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Subject: [PATCH 05/36] linux-user: fake /proc/self/maps
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glibc's pthread_attr_getstack tries to find the stack range from
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/proc/self/maps. Unfortunately, /proc is usually the host's /proc
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which means linux-user guests see qemu's stack there.
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Fake the file with a constructed maps entry that exposes the guest's
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stack range.
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Signed-off-by: Alexander Graf <agraf@suse.de>
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---
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linux-user/syscall.c | 15 +++++++++++++++
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1 files changed, 15 insertions(+), 0 deletions(-)
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diff --git a/linux-user/syscall.c b/linux-user/syscall.c
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index 1ecc0e1..8727249 100644
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--- a/linux-user/syscall.c
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+++ b/linux-user/syscall.c
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@@ -4603,6 +4603,20 @@ int get_osversion(void)
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return osversion;
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}
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+
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+static int open_self_maps(void *cpu_env, int fd)
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+{
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+ TaskState *ts = ((CPUState *)cpu_env)->opaque;
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+
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+ dprintf(fd, "%08llx-%08llx rw-p %08llx 00:00 0 [stack]\n",
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+ (unsigned long long)ts->info->stack_limit,
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+ (unsigned long long)(ts->stack_base + (TARGET_PAGE_SIZE - 1))
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+ & TARGET_PAGE_MASK,
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+ (unsigned long long)ts->stack_base);
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+
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+ return 0;
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+}
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+
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static int do_open(void *cpu_env, const char *pathname, int flags, mode_t mode)
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{
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struct fake_open {
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@@ -4611,6 +4625,7 @@ static int do_open(void *cpu_env, const char *pathname, int flags, mode_t mode)
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};
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const struct fake_open *fake_open;
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static const struct fake_open fakes[] = {
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+ { "/proc/self/maps", open_self_maps },
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{ NULL, NULL }
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};
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--
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1.6.0.2
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