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Bug 959254 - Make MappableSeekableZStream::ensure mprotect error message more useful for debugging failures. r=nfroyd

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This commit is contained in:
Mike Hommey 2014-01-15 16:21:45 +09:00
parent a426c588b6
commit 19fa98973b
1 changed files with 6 additions and 2 deletions
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8
mozglue/linker/Mappable.cpp
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@ -14,6 +14,7 @@
#include <linux/ashmem.h>
#endif
#include <sys/stat.h>
#include <errno.h>
#include "ElfLoader.h"
#include "SeekableZStream.h"
#include "Logging.h"
@ -556,10 +557,13 @@ MappableSeekableZStream::ensure(const void *addr)
length = reinterpret_cast<uintptr_t>(end)
- reinterpret_cast<uintptr_t>(start);
DEBUG_LOG("mprotect @%p, 0x%" PRIxSize ", 0x%x", start, length, map->prot);
if (mprotect(const_cast<void *>(start), length, map->prot) == 0)
if (mprotect(const_cast<void *>(start), length, map->prot) == 0) {
DEBUG_LOG("mprotect @%p, 0x%" PRIxSize ", 0x%x", start, length, map->prot);
return true;
}
LOG("mprotect @%p, 0x%" PRIxSize ", 0x%x failed with errno %d",
start, length, map->prot, errno);
LOG("mprotect failed");
return false;
}