add prctl constants on android

Add all constants from bionic's `prctl.h` header

https://android.googlesource.com/platform/bionic/+/7ac54f5c391bf3aeb9fec84a158939421fd8f505/libc/kernel/uapi/linux/prctl.h

Author: dead10ck

build.rs

@@ -24,6 +24,8 @@ const ALLOWED_CFGS: &[&str] = &[
     // Corresponds to `__USE_TIME_BITS64` in UAPI
     "linux_time_bits64",
     "musl_v1_2_3",
+    // termux
+    "termux",
 ];
 
 // Extra values to allow for check-cfg.
@@ -157,6 +159,11 @@ fn main() {
             }
         }
     }
+
+    // check for termux
+    if target_os == "android" && env::var("TERMUX_VERSION").is_ok() {
+        set_cfg("termux");
+    }
 }
 
 /// Run `rustc --version` and capture the output, adjusting arguments as needed if `clippy-driver`

libc-test/build.rs

@@ -68,7 +68,7 @@ fn do_ctest() {
         t if t.contains("windows") => test_windows(t),
         t if t.contains("vxworks") => test_vxworks(t),
         t if t.contains("nto-qnx") => test_neutrino(t),
-        t if t.contains("aix") => return test_aix(t),
+        t if t.contains("aix") => test_aix(t),
         t => panic!("unknown target {t}"),
     }
 }
@@ -2224,6 +2224,9 @@ fn test_android(target: &str) {
             // FIXME(android): Requires >= 6.12 kernel headers.
             "SOF_TIMESTAMPING_OPT_RX_FILTER" => true,
 
+            // FIXME(android): c value == 0 for some reason on termux
+            "TCSAFLUSH" => true,
+
             _ => false,
         }
     });
@@ -2288,7 +2291,10 @@ fn test_android(target: &str) {
             // FIXME(android): bad function pointers:
             "isalnum" | "isalpha" | "iscntrl" | "isdigit" | "isgraph" | "islower" | "isprint"
             | "ispunct" | "isspace" | "isupper" | "isxdigit" | "isblank" | "tolower"
-            | "toupper" => true,
+            | "toupper" | "getpwuid_r" | "tmpfile" | "getpwnam" | "getpwuid" | "tcdrain"
+            | "cfgetispeed" | "cfgetospeed" | "cfsetispeed" | "cfsetospeed" | "tcgetattr"
+            | "tcsetattr" | "tcflow" | "tcflush" | "tcgetsid" | "tcsendbreak" | "cfmakeraw"
+            | "cfsetspeed" => true,
 
             // Added in API level 24
             "if_nameindex" | "if_freenameindex" => true,
@@ -5564,7 +5570,7 @@ fn test_aix(target: &str) {
         "ACTION" => ty.to_string(),
 
         // 'sigval' is a struct in Rust, but a union in C.
-        "sigval" => format!("union sigval"),
+        "sigval" => "union sigval".to_string(),
 
         t if t.ends_with("_t") => t.to_string(),
         t if is_struct => format!("struct {}", t),

libc-test/semver/android.txt

@@ -1947,17 +1947,171 @@ PROT_GROWSUP
 PROT_NONE
 PROT_READ
 PROT_WRITE
+PR_CAPBSET_DROP
+PR_CAPBSET_READ
+PR_CAP_AMBIENT
+PR_CAP_AMBIENT_CLEAR_ALL
+PR_CAP_AMBIENT_IS_SET
+PR_CAP_AMBIENT_LOWER
+PR_CAP_AMBIENT_RAISE
+PR_ENDIAN_BIG
+PR_ENDIAN_LITTLE
+PR_ENDIAN_PPC_LITTLE
+PR_FPEMU_NOPRINT
+PR_FPEMU_SIGFPE
+PR_FP_EXC_ASYNC
+PR_FP_EXC_DISABLED
+PR_FP_EXC_DIV
+PR_FP_EXC_INV
+PR_FP_EXC_NONRECOV
+PR_FP_EXC_OVF
+PR_FP_EXC_PRECISE
+PR_FP_EXC_RES
+PR_FP_EXC_SW_ENABLE
+PR_FP_EXC_UND
+PR_FP_MODE_FR
+PR_FP_MODE_FRE
+PR_GET_AUXV
+PR_GET_CHILD_SUBREAPER
+PR_GET_DUMPABLE
+PR_GET_ENDIAN
+PR_GET_FPEMU
+PR_GET_FPEXC
+PR_GET_FP_MODE
+PR_GET_IO_FLUSHER
+PR_GET_KEEPCAPS
+PR_GET_MDWE
+PR_GET_MEMORY_MERGE
 PR_GET_NAME
 PR_GET_NO_NEW_PRIVS
+PR_GET_PDEATHSIG
 PR_GET_SECCOMP
+PR_GET_SECUREBITS
+PR_GET_SPECULATION_CTRL
+PR_GET_TAGGED_ADDR_CTRL
+PR_GET_THP_DISABLE
+PR_GET_TID_ADDRESS
+PR_GET_TIMERSLACK
 PR_GET_TIMING
+PR_GET_TSC
+PR_GET_UNALIGN
+PR_MCE_KILL
+PR_MCE_KILL_CLEAR
+PR_MCE_KILL_DEFAULT
+PR_MCE_KILL_EARLY
+PR_MCE_KILL_GET
+PR_MCE_KILL_LATE
+PR_MCE_KILL_SET
+PR_MDWE_NO_INHERIT
+PR_MDWE_REFUSE_EXEC_GAIN
+PR_MPX_DISABLE_MANAGEMENT
+PR_MPX_ENABLE_MANAGEMENT
+PR_MTE_TAG_MASK
+PR_MTE_TAG_SHIFT
+PR_MTE_TCF_ASYNC
+PR_MTE_TCF_MASK
+PR_MTE_TCF_NONE
+PR_MTE_TCF_SHIFT
+PR_MTE_TCF_SYNC
+PR_PAC_APDAKEY
+PR_PAC_APDBKEY
+PR_PAC_APGAKEY
+PR_PAC_APIAKEY
+PR_PAC_APIBKEY
+PR_PAC_GET_ENABLED_KEYS
+PR_PAC_RESET_KEYS
+PR_PAC_SET_ENABLED_KEYS
+PR_RISCV_V_GET_CONTROL
+PR_RISCV_V_SET_CONTROL
+PR_RISCV_V_VSTATE_CTRL_CUR_MASK
+PR_RISCV_V_VSTATE_CTRL_DEFAULT
+PR_RISCV_V_VSTATE_CTRL_INHERIT
+PR_RISCV_V_VSTATE_CTRL_MASK
+PR_RISCV_V_VSTATE_CTRL_NEXT_MASK
+PR_RISCV_V_VSTATE_CTRL_OFF
+PR_RISCV_V_VSTATE_CTRL_ON
+PR_SCHED_CORE
+PR_SCHED_CORE_CREATE
+PR_SCHED_CORE_GET
+PR_SCHED_CORE_MAX
+PR_SCHED_CORE_SCOPE_PROCESS_GROUP
+PR_SCHED_CORE_SCOPE_THREAD
+PR_SCHED_CORE_SCOPE_THREAD_GROUP
+PR_SCHED_CORE_SHARE_FROM
+PR_SCHED_CORE_SHARE_TO
+PR_SET_CHILD_SUBREAPER
+PR_SET_DUMPABLE
+PR_SET_ENDIAN
+PR_SET_FPEMU
+PR_SET_FPEXC
+PR_SET_FP_MODE
+PR_SET_IO_FLUSHER
+PR_SET_KEEPCAPS
+PR_SET_MDWE
+PR_SET_MEMORY_MERGE
+PR_SET_MM
+PR_SET_MM_ARG_END
+PR_SET_MM_ARG_START
+PR_SET_MM_AUXV
+PR_SET_MM_BRK
+PR_SET_MM_END_CODE
+PR_SET_MM_END_DATA
+PR_SET_MM_ENV_END
+PR_SET_MM_ENV_START
+PR_SET_MM_EXE_FILE
+PR_SET_MM_MAP
+PR_SET_MM_MAP_SIZE
+PR_SET_MM_START_BRK
+PR_SET_MM_START_CODE
+PR_SET_MM_START_DATA
+PR_SET_MM_START_STACK
 PR_SET_NAME
 PR_SET_NO_NEW_PRIVS
+PR_SET_PDEATHSIG
+PR_SET_PTRACER
+PR_SET_PTRACER_ANY
 PR_SET_SECCOMP
+PR_SET_SECUREBITS
+PR_SET_SPECULATION_CTRL
+PR_SET_SYSCALL_USER_DISPATCH
+PR_SET_TAGGED_ADDR_CTRL
+PR_SET_THP_DISABLE
+PR_SET_TIMERSLACK
+PR_SET_TIMING
+PR_SET_TSC
+PR_SET_UNALIGN
 PR_SET_VMA
 PR_SET_VMA_ANON_NAME
+PR_SME_GET_VL
+PR_SME_SET_VL
+PR_SME_SET_VL_ONEXEC
+PR_SME_VL_INHERIT
+PR_SME_VL_LEN_MASK
+PR_SPEC_DISABLE
+PR_SPEC_DISABLE_NOEXEC
+PR_SPEC_ENABLE
+PR_SPEC_FORCE_DISABLE
+PR_SPEC_INDIRECT_BRANCH
+PR_SPEC_L1D_FLUSH
+PR_SPEC_NOT_AFFECTED
+PR_SPEC_PRCTL
+PR_SPEC_STORE_BYPASS
+PR_SVE_GET_VL
+PR_SVE_SET_VL
+PR_SVE_SET_VL_ONEXEC
+PR_SVE_VL_INHERIT
+PR_SVE_VL_LEN_MASK
+PR_SYS_DISPATCH_OFF
+PR_SYS_DISPATCH_ON
+PR_TAGGED_ADDR_ENABLE
+PR_TASK_PERF_EVENTS_DISABLE
+PR_TASK_PERF_EVENTS_ENABLE
 PR_TIMING_STATISTICAL
 PR_TIMING_TIMESTAMP
+PR_TSC_ENABLE
+PR_TSC_SIGSEGV
+PR_UNALIGN_NOPRINT
+PR_UNALIGN_SIGBUS
 PTHREAD_BARRIER_SERIAL_THREAD
 PTHREAD_COND_INITIALIZER
 PTHREAD_CREATE_DETACHED
@@ -2516,6 +2670,8 @@ SW_CNT
 SW_MAX
 SYN_CNT
 SYN_MAX
+SYSCALL_DISPATCH_FILTER_ALLOW
+SYSCALL_DISPATCH_FILTER_BLOCK
 SYS_accept4
 SYS_acct
 SYS_add_key