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Make abort messages available to debuggerd.

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This adds __libc_fatal, cleans up the internal logging code a bit more,
and switches suitable callers over to __libc_fatal. In addition to logging,
__libc_fatal stashes the message somewhere that the debuggerd signal handler
can find it before calling abort.

In the debuggerd signal handler, we pass this address to debuggerd so that
it can come back with ptrace to read the message and present it to the user.

Bug: 8531731
Change-Id: I416ec1da38a8a1b0d0a582ccd7c8aaa681ed4a29
This commit is contained in:
Elliott Hughes
2013-04-04 13:46:46 -07:00
parent 014c75c78b
commit 0d787c1fa1
12 changed files with 247 additions and 281 deletions
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6
libc/bionic/system_properties.c
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@@ -106,7 +106,7 @@ int __system_properties_init(void)
goto cleanup;
}
prop_area *pa = mmap(0, fd_stat.st_size, PROT_READ, MAP_SHARED, fd, 0);
prop_area *pa = mmap(NULL, fd_stat.st_size, PROT_READ, MAP_SHARED, fd, 0);
if (pa == MAP_FAILED) {
goto cleanup;
@@ -150,7 +150,7 @@ const prop_info *__system_property_find(const char *name)
while(count--) {
unsigned entry = *toc++;
if(TOC_NAME_LEN(entry) != len) continue;
pi = TOC_TO_INFO(pa, entry);
if(memcmp(name, pi->name, len)) continue;
@@ -163,7 +163,7 @@ const prop_info *__system_property_find(const char *name)
int __system_property_read(const prop_info *pi, char *name, char *value)
{
unsigned serial, len;
for(;;) {
serial = pi->serial;
while(SERIAL_DIRTY(serial)) {