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Re: [Qemu-devel] [PATCH] linux-user: Add AT_SECURE auxval
From: |
Michael Tokarev |
Subject: |
Re: [Qemu-devel] [PATCH] linux-user: Add AT_SECURE auxval |
Date: |
Mon, 16 Oct 2017 21:04:44 +0300 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 |
I'm Cc'ing this to qemu-devel@ for review, since this patch hasn't got any
reviews.
Please the next time always inclure qemu-devel@ and other addresses according
to the output of scripts/get_maintainer.pl
Thanks,
/mjt
05.10.2017 17:35, Marco A L Barbosa wrote:
> This is necessary to run android ndk applications. Without this patch, the
> following error is generated:
>
> FATAL: kernel did not supply AT_SECURE
>
> Should AT_SECURE from host be considered or is the ids comparisons enough?
>
> Signed-off-by: Marco A L Barbosa <address@hidden>
> ---
> linux-user/elfload.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/linux-user/elfload.c b/linux-user/elfload.c
> index 79062882ba..177ce30e89 100644
> --- a/linux-user/elfload.c
> +++ b/linux-user/elfload.c
> @@ -1354,7 +1354,7 @@ struct exec
> ~(abi_ulong)(TARGET_ELF_EXEC_PAGESIZE-1))
> #define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
>
> -#define DLINFO_ITEMS 14
> +#define DLINFO_ITEMS 15
>
> static inline void memcpy_fromfs(void * to, const void * from, unsigned long
> n)
> {
> @@ -1782,6 +1782,7 @@ static abi_ulong create_elf_tables(abi_ulong p, int
> argc, int envc,
> NEW_AUX_ENT(AT_HWCAP, (abi_ulong) ELF_HWCAP);
> NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK));
> NEW_AUX_ENT(AT_RANDOM, (abi_ulong) u_rand_bytes);
> + NEW_AUX_ENT(AT_SECURE, (abi_ulong) (getuid() != geteuid() || getgid() !=
> getegid()));
>
> #ifdef ELF_HWCAP2
> NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2);
>
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