Revert "Remove the return type from the syscall lists and parser."

This reverts commit 83f08aa3c6aaaa810319e7068c1bb3f63bfdb6a0.

Reason for revert: DroidMonitor: Potential culprit for b/395697512 - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Change-Id: I891cb76071b5745743676eada6154302cc3f5dae
diff --git a/libc/SECCOMP_BLOCKLIST_APP.TXT b/libc/SECCOMP_BLOCKLIST_APP.TXT
index 5c317cf..b9ecc02 100644
--- a/libc/SECCOMP_BLOCKLIST_APP.TXT
+++ b/libc/SECCOMP_BLOCKLIST_APP.TXT
@@ -11,40 +11,40 @@
 # before uid change, including capset and setresuid. This is because the seccomp
 # filter must be installed while the process still has CAP_SYS_ADMIN; changing
 # the uid would remove that capability.
-setgid32(gid_t)     lp32
-setgid(gid_t)       lp64
-setuid32(uid_t)    lp32
-setuid(uid_t)      lp64
-setregid32(gid_t, gid_t)  lp32
-setregid(gid_t, gid_t)    lp64
-setreuid32(uid_t, uid_t)   lp32
-setreuid(uid_t, uid_t)     lp64
-setresgid32(gid_t, gid_t, gid_t)   lp32
-setresgid(gid_t, gid_t, gid_t)     lp64
+int     setgid32(gid_t)     lp32
+int     setgid(gid_t)       lp64
+int     setuid32(uid_t)    lp32
+int     setuid(uid_t)      lp64
+int     setregid32(gid_t, gid_t)  lp32
+int     setregid(gid_t, gid_t)    lp64
+int     setreuid32(uid_t, uid_t)   lp32
+int     setreuid(uid_t, uid_t)     lp64
+int     setresgid32(gid_t, gid_t, gid_t)   lp32
+int     setresgid(gid_t, gid_t, gid_t)     lp64
 # setresuid is explicitly allowed, see above.
-setfsgid32(gid_t) lp32
-setfsgid(gid_t)   lp64
-setfsuid32(uid_t) lp32
-setfsuid(uid_t)   lp64
-setgroups32(int, const gid_t*)   lp32
-setgroups(int, const gid_t*)     lp64
+int     setfsgid32(gid_t) lp32
+int     setfsgid(gid_t)   lp64
+int     setfsuid32(uid_t) lp32
+int     setfsuid(uid_t)   lp64
+int     setgroups32(int, const gid_t*)   lp32
+int     setgroups(int, const gid_t*)     lp64
 
 # Syscalls to modify times.
-adjtimex(struct timex*)   all
-clock_adjtime(clockid_t, struct timex*)   all
-clock_settime(clockid_t, const struct timespec*)  all
-settimeofday(const struct timeval*, const struct timezone*)   all
+int     adjtimex(struct timex*)   all
+int     clock_adjtime(clockid_t, struct timex*)   all
+int     clock_settime(clockid_t, const struct timespec*)  all
+int     settimeofday(const struct timeval*, const struct timezone*)   all
 
-acct(const char*  filepath)  all
-syslog(int, char*, int)   all
-chroot(const char*)  all
+int     acct(const char*  filepath)  all
+int     syslog(int, char*, int)   all
+int     chroot(const char*)  all
 
-init_module(void*, unsigned long, const char*)  all
-delete_module(const char*, unsigned int)   all
-mount(const char*, const char*, const char*, unsigned long, const void*)  all
-umount2(const char*, int)  all
-swapon(const char*, int) all
-swapoff(const char*) all
-setdomainname(const char*, size_t)  all
-sethostname(const char*, size_t)  all
-reboot(int, int, int, void*)  all
+int     init_module(void*, unsigned long, const char*)  all
+int     delete_module(const char*, unsigned int)   all
+int     mount(const char*, const char*, const char*, unsigned long, const void*)  all
+int     umount2(const char*, int)  all
+int     swapon(const char*, int) all
+int     swapoff(const char*) all
+int     setdomainname(const char*, size_t)  all
+int     sethostname(const char*, size_t)  all
+int     reboot(int, int, int, void*)  all