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platform_system_core
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Include page protections in the debuggerd map output. 

Bug: 7941716
Change-Id: I3bf475425c628c06f7799340c8a6132aab741742
This commit is contained in:
Elliott Hughes 2013-01-03 13:39:57 -08:00
parent 38219ee611
commit d1420be613
3 changed files with 28 additions and 19 deletions
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30
debuggerd/tombstone.c
View File

@ -350,6 +350,18 @@ static void dump_backtrace_and_stack(const ptrace_context_t* context, log_t* log
}
}
static void dump_map(log_t* log, map_info_t* m, const char* what) {
if (m != NULL) {
_LOG(log, false, " %08x-%08x %c%c%c %s\n", m->start, m->end,
m->is_readable ? 'r' : '-',
m->is_writable ? 'w' : '-',
m->is_executable ? 'x' : '-',
m->name);
} else {
_LOG(log, false, " (no %s)\n", what);
}
}
static void dump_nearby_maps(const ptrace_context_t* context, log_t* log, pid_t tid) {
siginfo_t si;
memset(&si, 0, sizeof(si));
@ -396,21 +408,9 @@ static void dump_nearby_maps(const ptrace_context_t* context, log_t* log, pid_t
* Show "next" then "match" then "prev" so that the addresses appear in
* ascending order (like /proc/pid/maps).
*/
if (next != NULL) {
_LOG(log, false, " %08x-%08x %s\n", next->start, next->end, next->name);
} else {
_LOG(log, false, " (no map below)\n");
}
if (map != NULL) {
_LOG(log, false, " %08x-%08x %s\n", map->start, map->end, map->name);
} else {
_LOG(log, false, " (no map for address)\n");
}
if (prev != NULL) {
_LOG(log, false, " %08x-%08x %s\n", prev->start, prev->end, prev->name);
} else {
_LOG(log, false, " (no map above)\n");
}
dump_map(log, next, "map below");
dump_map(log, map, "map for address");
dump_map(log, prev, "map above");
}
static void dump_thread(const ptrace_context_t* context, log_t* log, pid_t tid, bool at_fault,

6
include/corkscrew/map_info.h
View File

@ -32,6 +32,7 @@ typedef struct map_info {
uintptr_t start;
uintptr_t end;
bool is_readable;
bool is_writable;
bool is_executable;
void* data; // arbitrary data associated with the map by the user, initially NULL
char name[];
@ -46,9 +47,10 @@ void free_map_info_list(map_info_t* milist);
/* Finds the memory map that contains the specified address. */
const map_info_t* find_map_info(const map_info_t* milist, uintptr_t addr);
/* Returns true if the addr is in an readable map. */
/* Returns true if the addr is in a readable map. */
bool is_readable_map(const map_info_t* milist, uintptr_t addr);
/* Returns true if the addr is in a writable map. */
bool is_writable_map(const map_info_t* milist, uintptr_t addr);
/* Returns true if the addr is in an executable map. */
bool is_executable_map(const map_info_t* milist, uintptr_t addr);

11
libcorkscrew/map_info.c
View File

@ -57,13 +57,15 @@ static map_info_t* parse_maps_line(const char* line)
mi->start = start;
mi->end = end;
mi->is_readable = strlen(permissions) == 4 && permissions[0] == 'r';
mi->is_writable = strlen(permissions) == 4 && permissions[1] == 'w';
mi->is_executable = strlen(permissions) == 4 && permissions[2] == 'x';
mi->data = NULL;
memcpy(mi->name, name, name_len);
mi->name[name_len] = '\0';
ALOGV("Parsed map: start=0x%08x, end=0x%08x, "
"is_readable=%d, is_executable=%d, name=%s",
mi->start, mi->end, mi->is_readable, mi->is_executable, mi->name);
"is_readable=%d, is_writable=%d, is_executable=%d, name=%s",
mi->start, mi->end,
mi->is_readable, mi->is_writable, mi->is_executable, mi->name);
}
return mi;
}
@ -110,6 +112,11 @@ bool is_readable_map(const map_info_t* milist, uintptr_t addr) {
return mi && mi->is_readable;
}
bool is_writable_map(const map_info_t* milist, uintptr_t addr) {
const map_info_t* mi = find_map_info(milist, addr);
return mi && mi->is_writable;
}
bool is_executable_map(const map_info_t* milist, uintptr_t addr) {
const map_info_t* mi = find_map_info(milist, addr);
return mi && mi->is_executable;