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linux-user/elfload: ensure mmap_lock() held while setting up

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Future patches will enforce the holding of mmap_lock() when we are
manipulating internal memory structures. Technically it doesn't matter
in the case of elfload as we haven't started executing yet. However it
is easier to grab the lock when required than special case the
translate-all API.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20161027151030.20863-8-alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Alex Bennée 2016-10-27 16:10:04 +01:00 committed by Paolo Bonzini
parent 7d7500d998
commit 98c1076cc9
1 changed files with 4 additions and 0 deletions
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4
linux-user/elfload.c
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@ -1842,6 +1842,8 @@ static void load_elf_image(const char *image_name, int image_fd,
info->pt_dynamic_addr = 0; info->pt_dynamic_addr = 0;
#endif #endif
mmap_lock();
/* Find the maximum size of the image and allocate an appropriate /* Find the maximum size of the image and allocate an appropriate
amount of memory to handle that. */ amount of memory to handle that. */
loaddr = -1, hiaddr = 0; loaddr = -1, hiaddr = 0;
@ -2002,6 +2004,8 @@ static void load_elf_image(const char *image_name, int image_fd,
load_symbols(ehdr, image_fd, load_bias); load_symbols(ehdr, image_fd, load_bias);
} }
mmap_unlock();
close(image_fd); close(image_fd);
return; return;