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add a few more asserts, don't allow pa_limit_caps() to fail

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2370 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2008-05-06 21:10:53 +00:00
parent 71d14d40c8
commit 4fa6cb4589
2 changed files with 10 additions and 20 deletions
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28
src/daemon/caps.c
View file

@ -85,31 +85,21 @@ void pa_drop_root(void) {
#if defined(HAVE_SYS_CAPABILITY_H) && defined(HAVE_SYS_PRCTL_H)
/* Limit permitted capabilities set to CAPSYS_NICE */
int pa_limit_caps(void) {
int r = -1;
void pa_limit_caps(void) {
cap_t caps;
cap_value_t nice_cap = CAP_SYS_NICE;
pa_assert_se(caps = cap_init());
pa_assert_se(cap_clear(caps) == 0);
pa_assert_se(cap_set_flag(caps, CAP_EFFECTIVE, 1, &nice_cap, CAP_SET) == 0);
pa_assert_se(cap_set_flag(caps, CAP_PERMITTED, 1, &nice_cap, CAP_SET) == 0);
pa_assert_se(cap_set_proc(caps) == 0);
cap_clear(caps);
cap_set_flag(caps, CAP_EFFECTIVE, 1, &nice_cap, CAP_SET);
cap_set_flag(caps, CAP_PERMITTED, 1, &nice_cap, CAP_SET);
if (cap_set_proc(caps) < 0)
goto fail;
if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) < 0)
goto fail;
pa_assert_se(prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) == 0);
pa_log_info("Dropped capabilities successfully.");
r = 1;
fail:
cap_free(caps);
return r;
pa_assert_se(cap_free(caps) == 0);
}
/* Drop all capabilities, effectively becoming a normal user */
@ -119,9 +109,9 @@ void pa_drop_caps(void) {
pa_assert_se(prctl(PR_SET_KEEPCAPS, 0, 0, 0, 0) == 0);
pa_assert_se(caps = cap_init());
cap_clear(caps);
pa_assert_se(cap_clear(caps) == 0);
pa_assert_se(cap_set_proc(caps) == 0);
cap_free(caps);
pa_assert_se(cap_free(caps) == 0);
}
#else

2
src/daemon/caps.h
View file

@ -26,6 +26,6 @@
void pa_drop_root(void);
void pa_drop_caps(void);
int pa_limit_caps(void);
void pa_limit_caps(void);
#endif