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Merge \"ueventd: only relabel devices if there\'s a delta\"

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am: 95428817d6

Change-Id: I610cc91cd0e3d9ce679b4c98e142bada0593d1a8
This commit is contained in:
William Roberts 2016-06-09 19:12:41 +00:00 • committed by android-build-merger
commit 807fa4bd5c
1 changed files with 15 additions and 1 deletions
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16
init/devices.cpp
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@ -257,11 +257,25 @@ static void make_device(const char *path,
/* If the node already exists update its SELinux label to handle cases when
* it was created with the wrong context during coldboot procedure. */
if (mknod(path, mode, dev) && (errno == EEXIST)) {
if (lsetfilecon(path, secontext)) {
char* fcon = nullptr;
int rc = lgetfilecon(path, &fcon);
if (rc < 0) {
ERROR("Cannot get SELinux label on '%s' device (%s)\n",
path, strerror(errno));
goto out;
}
bool different = strcmp(fcon, secontext) != 0;
freecon(fcon);
if (different && lsetfilecon(path, secontext)) {
ERROR("Cannot set '%s' SELinux label on '%s' device (%s)\n",
secontext, path, strerror(errno));
}
}
out:
chown(path, uid, -1);
setegid(AID_ROOT);