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e_system: When setuid, set home also. 

This ensures we have a matching $HOME when using setuid, without
which can potentially cause issues in eina_vpath on some
systems (FreeBSD as example).
This commit is contained in:
Alastair Poole 2020-04-21 15:56:26 +01:00
parent 946c9dd340
commit d0b2f3db0c
1 changed files with 19 additions and 2 deletions
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21
src/bin/system/e_system_main.c
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@ -93,20 +93,37 @@ deny:
static void
setuid_setup(void)
{
struct passwd *pwent;
static char buf[4096];
uid = getuid();
gid = getgid();
if (setuid(0) != 0)
{
ERR("Unable to assume root user privileges\n");
fprintf(stderr, "Unable to assume root user privileges\n");
exit(5);
}
if (setgid(0) != 0)
{
ERR("Unable to assume root group privileges\n");
fprintf(stderr, "Unable to assume root group privileges\n");
exit(7);
}
pwent = getpwuid(getuid());
if (!pwent)
{
fprintf(stderr, "Unable to obtain passwd entry\n");
exit(1);
}
snprintf(buf, sizeof(buf), "HOME=%s", pwent->pw_dir);
if (putenv(buf) == -1)
{
fprintf(stderr, "Unable to set $HOME environment\n");
exit(1);
}
// die with parent - special as this is setuid
#ifdef HAVE_PRCTL
prctl(PR_SET_PDEATHSIG, SIGTERM);