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authorStefano Brivio <sbrivio@redhat.com>2022-10-31 10:29:58 +0100
committerStefano Brivio <sbrivio@redhat.com>2022-11-04 12:01:09 +0100
commit2d4468ebb72242a2d1d5345941df2db14584f14c (patch)
tree8fb4a6aee390de85be907656887a0be1ca68639f /tap.c
parente76e65a36e9b1367efa1137df71faeb265ba151a (diff)
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tap: Support for detection of existing sockets on ramfs
On ramfs, connecting to a non-existent UNIX domain socket yields EACCESS, instead of ENOENT. This is visible if we use passt directly on rootfs (a ramfs instance) from an initramfs image. It's probably wrong for ramfs to return EACCES, but given the simplicity of the filesystem, I doubt we should try to fix it there at the possible cost of added complexity. Also, this whole beauty should go away once qrap-less usage is established, so just accept EACCES as indication that a conflicting socket does not, in fact, exist. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'tap.c')
-rw-r--r--tap.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tap.c b/tap.c
index 4dcff4f..0a3ccce 100644
--- a/tap.c
+++ b/tap.c
@@ -912,7 +912,8 @@ static void tap_sock_unix_init(struct ctx *c)
}
ret = connect(ex, (const struct sockaddr *)&addr, sizeof(addr));
- if (!ret || (errno != ENOENT && errno != ECONNREFUSED)) {
+ if (!ret || (errno != ENOENT && errno != ECONNREFUSED &&
+ errno != EACCES)) {
if (*c->sock_path) {
err("Socket path %s already in use", path);
exit(EXIT_FAILURE);