diff options
Diffstat (limited to 'package/network/services/dropbear/patches/020-Fix-test-for-multiuser-kernels.patch')
| -rw-r--r-- | package/network/services/dropbear/patches/020-Fix-test-for-multiuser-kernels.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/package/network/services/dropbear/patches/020-Fix-test-for-multiuser-kernels.patch b/package/network/services/dropbear/patches/020-Fix-test-for-multiuser-kernels.patch new file mode 100644 index 0000000000..8d016faa9c --- /dev/null +++ b/package/network/services/dropbear/patches/020-Fix-test-for-multiuser-kernels.patch @@ -0,0 +1,33 @@ +From 9ac650401ffc2fb05c9328d26e76a5e7ae39152a Mon Sep 17 00:00:00 2001 +From: Matt Johnston <matt@ucc.asn.au> +Date: Mon, 11 Dec 2023 23:31:22 +0800 +Subject: Fix test for multiuser kernels + +getuid() succeeds even on non-multiuser kernels. Instead +getgroups() is a valid test. + +Fixes #214 on github +--- + common-session.c | 11 +++++++---- + 1 file changed, 7 insertions(+), 4 deletions(-) + +--- a/common-session.c ++++ b/common-session.c +@@ -71,10 +71,13 @@ void common_session_init(int sock_in, in + #if !DROPBEAR_SVR_MULTIUSER + /* A sanity check to prevent an accidental configuration option + leaving multiuser systems exposed */ +- errno = 0; +- getuid(); +- if (errno != ENOSYS) { +- dropbear_exit("Non-multiuser Dropbear requires a non-multiuser kernel"); ++ { ++ int ret; ++ errno = 0; ++ ret = getgroups(0, NULL); ++ if (!(ret == -1 && errno == ENOSYS)) { ++ dropbear_exit("Non-multiuser Dropbear requires a non-multiuser kernel"); ++ } + } + #endif + |