Egbert Eich
1a9d38c162
rename to:
N_Install-Avoid-failure-on-wrapper-installation.patch
- u_xorg-wrapper-Drop-supplemental-group-IDs.patch:
Drop supplementary group privileges.
- u_xorg-wrapper-build-Build-position-independent-code.patch:
Build position independent.
OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/xorg-x11-server?expand=0&rev=627
79 lines
2.8 KiB
Diff
79 lines
2.8 KiB
Diff
From: Egbert Eich <eich@suse.de>
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Date: Tue Apr 12 15:52:37 2016 +0200
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Subject: [PATCH]xorg-wrapper: Drop supplemental group IDs
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Patch-mainline: to be upstreamed
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References:
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Signed-off-by: Egbert Eich <eich@suse.com>
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Signed-off-by: Egbert Eich <eich@suse.de>
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---
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hw/xfree86/xorg-wrapper.c | 48 +++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 48 insertions(+)
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diff --git a/hw/xfree86/xorg-wrapper.c b/hw/xfree86/xorg-wrapper.c
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index d930962..64a43c4 100644
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--- a/hw/xfree86/xorg-wrapper.c
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+++ b/hw/xfree86/xorg-wrapper.c
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@@ -36,6 +36,8 @@
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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+#include <pwd.h>
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+#include <grp.h>
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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#include <sys/consio.h>
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#endif
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@@ -252,6 +254,52 @@ int main(int argc, char *argv[])
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if (needs_root_rights == 0 || (total_cards && kms_cards == total_cards)) {
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gid_t realgid = getgid();
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uid_t realuid = getuid();
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+ int ngroups = 0;
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+ gid_t *groups = NULL;
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+ long int initlen = sysconf(_SC_GETPW_R_SIZE_MAX);
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+ size_t len;
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+ struct passwd result, *resultp;
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+ char *buffer;
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+ int e;
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+
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+ if (initlen == -1)
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+ len = 1024;
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+ else
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+ len = (size_t) initlen;
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+ if ((buffer = malloc(len)) < 0) {
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+ fprintf(stderr, "%s: Could not allocate memory: %s\n",
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+ progname, strerror(errno));
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+ exit (1);
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+ }
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+ if ((e = getpwuid_r(realuid, &result, buffer, len, &resultp)) > 0) {
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+ fprintf(stderr, "%s: Could not get user name: %s\n",
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+ progname, strerror(errno));
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+ exit (1);
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+ } else if (resultp == NULL) {
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+ fprintf(stderr, "%s: Could not find user name for UID %d\n",
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+ progname, realuid);
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+ exit (1);
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+ }
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+ if (getgrouplist(result.pw_name, realgid, groups, &ngroups) < 0) {
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+ if ((groups = malloc(sizeof(gid_t) * ngroups)) == NULL) {
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+ fprintf(stderr, "%s: Could not allocate memory: %s\n",
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+ progname, strerror(errno));
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+ exit (1);
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+ }
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+ if (getgrouplist(result.pw_name, realgid, groups, &ngroups) < 0) {
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+ fprintf(stderr, "%s: Could not get supplementary group list\n",
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+ progname);
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+ ngroups = 0;
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+ }
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+ }
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+ if (setgroups(ngroups, groups) == -1) {
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+ fprintf(stderr, "%s: Could not set groups: %s\n",
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+ progname, strerror(errno));
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+ exit (1);
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+ }
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+ memset(buffer, 0, len);
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+ free(buffer);
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+ free(groups);
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if (setresgid(-1, realgid, realgid) != 0) {
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fprintf(stderr, "%s: Could not drop setgid privileges: %s\n",
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