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WIP/RFE: Hint to users to use ostree/rpm-ostree if we get EROFS #320

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cgwalters wants to merge 2 commits into from
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WIP/RFE: Hint to users to use ostree/rpm-ostree if we get EROFS #320

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1642908
lib/transaction: Don't SEGV in sync if a txn was failed
cgwalters Sep 7, 2017
4265db7
Hint to users to use ostree/rpm-ostree if we get EROFS
cgwalters Sep 7, 2017
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24 changes: 20 additions & 4 deletions lib/rpmlock.c
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ struct rpmlock_s {
char *path;
char *descr;
int fdrefs;
const char *managedby_instead;
};

static rpmlock rpmlock_new(const char *lock_path, const char *descr)
Expand All @@ -27,13 +28,26 @@ static rpmlock rpmlock_new(const char *lock_path, const char *descr)
if (lock != NULL) {
mode_t oldmask = umask(022);
lock->fd = open(lock_path, O_RDWR|O_CREAT, 0644);
int errsv = errno;
(void) umask(oldmask);

if (lock->fd == -1) {
/* Check if this is an ostree/rpm-ostree managed system */
lock->fdrefs = 1;
lock->managedby_instead = NULL;
if (lock->fd == -1 && errsv == EROFS) {
struct stat stbuf;
if (stat ("/run/ostree-booted", &stbuf) == 0) {
lock->managedby_instead = "ostree";
if (stat ("/usr/bin/rpm-ostree", &stbuf) == 0) {
lock->managedby_instead = "rpm-ostree";
}
}
lock->openmode = RPMLOCK_READ;
} else if (lock->fd == -1) {
lock->fd = open(lock_path, O_RDONLY);
if (lock->fd == -1) {
free(lock);
lock = NULL;
return NULL;
} else {
lock->openmode = RPMLOCK_READ;
}
Expand All @@ -43,7 +57,6 @@ static rpmlock rpmlock_new(const char *lock_path, const char *descr)
if (lock) {
lock->path = xstrdup(lock_path);
lock->descr = xstrdup(descr);
lock->fdrefs = 1;
}
}
return lock;
Expand All @@ -54,7 +67,8 @@ static void rpmlock_free(rpmlock lock)
if (--lock->fdrefs == 0) {
free(lock->path);
free(lock->descr);
(void) close(lock->fd);
if (lock->fd != -1)
(void) close(lock->fd);
free(lock);
}
}
Expand Down Expand Up @@ -117,6 +131,8 @@ rpmlock rpmlockNew(const char *lock_path, const char *descr)
if (!lock) {
rpmlog(RPMLOG_ERR, _("can't create %s lock on %s (%s)\n"),
descr, lock_path, strerror(errno));
} else if (lock->managedby_instead) {
rpmlog(RPMLOG_ERR, _("This system is managed by %s\n"), lock->managedby_instead);
}
return lock;
}
Expand Down
6 changes: 6 additions & 0 deletions lib/transaction.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1499,6 +1499,12 @@ static void rpmtsSync(rpmts ts)
{
if (rpmChrootDone())
return;
/* If the txn didn't get as far as calculating disk space,
* or disk space warnings are filtered out, assume we
* shouldn't sync.
*/
if (!ts->dsi)
return;

#if HAVE_SYNCFS
for (rpmDiskSpaceInfo dsi = ts->dsi; dsi->bsize; dsi++) {
Expand Down