suppress EINTR in sem_wait and sem_timedwait
[musl] / src / conf / sysconf.c
index 9ac52a1..b8b761d 100644 (file)
@@ -3,6 +3,7 @@
 #include <errno.h>
 #include <sys/resource.h>
 #include <signal.h>
+#include <sys/sysinfo.h>
 #include "syscall.h"
 #include "libc.h"
 
@@ -14,6 +15,9 @@
 #define JT_SEM_VALUE_MAX JT(5)
 #define JT_NPROCESSORS_CONF JT(6)
 #define JT_NPROCESSORS_ONLN JT(7)
+#define JT_PHYS_PAGES JT(8)
+#define JT_AVPHYS_PAGES JT(9)
+#define JT_ZERO JT(10)
 
 #define RLIM(x) (-32768|(RLIMIT_ ## x))
 
@@ -45,7 +49,7 @@ long sysconf(int name)
                [_SC_SHARED_MEMORY_OBJECTS] = VER,
                [_SC_AIO_LISTIO_MAX] = -1,
                [_SC_AIO_MAX] = -1,
-               [_SC_AIO_PRIO_DELTA_MAX] = 0, /* ?? */
+               [_SC_AIO_PRIO_DELTA_MAX] = JT_ZERO, /* ?? */
                [_SC_DELAYTIMER_MAX] = _POSIX_DELAYTIMER_MAX,
                [_SC_MQ_OPEN_MAX] = -1,
                [_SC_MQ_PRIO_MAX] = JT_MQ_PRIO_MAX,
@@ -61,11 +65,9 @@ long sysconf(int name)
                [_SC_BC_SCALE_MAX] = _POSIX2_BC_SCALE_MAX,
                [_SC_BC_STRING_MAX] = _POSIX2_BC_STRING_MAX,
                [_SC_COLL_WEIGHTS_MAX] = COLL_WEIGHTS_MAX,
-               [_SC_EQUIV_CLASS_MAX] = -1, /* ?? */
                [_SC_EXPR_NEST_MAX] = -1,
                [_SC_LINE_MAX] = -1,
                [_SC_RE_DUP_MAX] = RE_DUP_MAX,
-               [_SC_CHARCLASS_NAME_MAX] = -1, /* ?? */
                [_SC_2_VERSION] = VER,
                [_SC_2_C_BIND] = VER,
                [_SC_2_C_DEV] = -1,
@@ -73,20 +75,7 @@ long sysconf(int name)
                [_SC_2_FORT_RUN] = -1,
                [_SC_2_SW_DEV] = -1,
                [_SC_2_LOCALEDEF] = -1,
-               [_SC_PII] = -1, /* ????????? */
-               [_SC_PII_XTI] = -1,
-               [_SC_PII_SOCKET] = -1,
-               [_SC_PII_INTERNET] = -1,
-               [_SC_PII_OSI] = -1,
-               [_SC_POLL] = 1,
-               [_SC_SELECT] = 1,
                [_SC_IOV_MAX] = IOV_MAX,
-               [_SC_PII_INTERNET_STREAM] = -1,
-               [_SC_PII_INTERNET_DGRAM] = -1,
-               [_SC_PII_OSI_COTS] = -1,
-               [_SC_PII_OSI_CLTS] = -1,
-               [_SC_PII_OSI_M] = -1,
-               [_SC_T_IOV_MAX] = -1,
                [_SC_THREADS] = VER,
                [_SC_THREAD_SAFE_FUNCTIONS] = VER,
                [_SC_GETGR_R_SIZE_MAX] = -1,
@@ -105,8 +94,8 @@ long sysconf(int name)
                [_SC_THREAD_PROCESS_SHARED] = VER,
                [_SC_NPROCESSORS_CONF] = JT_NPROCESSORS_CONF,
                [_SC_NPROCESSORS_ONLN] = JT_NPROCESSORS_ONLN,
-               [_SC_PHYS_PAGES] = -1,
-               [_SC_AVPHYS_PAGES] = -1,
+               [_SC_PHYS_PAGES] = JT_PHYS_PAGES,
+               [_SC_AVPHYS_PAGES] = JT_AVPHYS_PAGES,
                [_SC_ATEXIT_MAX] = -1,
                [_SC_PASS_MAX] = -1,
                [_SC_XOPEN_VERSION] = _XOPEN_VERSION,
@@ -116,89 +105,44 @@ long sysconf(int name)
                [_SC_XOPEN_ENH_I18N] = 1,
                [_SC_XOPEN_SHM] = 1,
                [_SC_2_CHAR_TERM] = -1,
-               [_SC_2_C_VERSION] = -1,
                [_SC_2_UPE] = -1,
                [_SC_XOPEN_XPG2] = -1,
                [_SC_XOPEN_XPG3] = -1,
                [_SC_XOPEN_XPG4] = -1,
-               [_SC_CHAR_BIT] = -1,
-               [_SC_CHAR_MAX] = -1,
-               [_SC_CHAR_MIN] = -1,
-               [_SC_INT_MAX] = -1,
-               [_SC_INT_MIN] = -1,
-               [_SC_LONG_BIT] = -1,
-               [_SC_WORD_BIT] = -1,
-               [_SC_MB_LEN_MAX] = -1,
                [_SC_NZERO] = NZERO,
-               [_SC_SSIZE_MAX] = -1,
-               [_SC_SCHAR_MAX] = -1,
-               [_SC_SCHAR_MIN] = -1,
-               [_SC_SHRT_MAX] = -1,
-               [_SC_SHRT_MIN] = -1,
-               [_SC_UCHAR_MAX] = -1,
-               [_SC_UINT_MAX] = -1,
-               [_SC_ULONG_MAX] = -1,
-               [_SC_USHRT_MAX] = -1,
-               [_SC_NL_ARGMAX] = -1,
-               [_SC_NL_LANGMAX] = -1,
-               [_SC_NL_MSGMAX] = -1,
-               [_SC_NL_NMAX] = -1,
-               [_SC_NL_SETMAX] = -1,
-               [_SC_NL_TEXTMAX] = -1,
                [_SC_XBS5_ILP32_OFF32] = -1,
-               [_SC_XBS5_ILP32_OFFBIG] = 2*(sizeof(long)==4)-1,
-               [_SC_XBS5_LP64_OFF64] = 2*(sizeof(long)==8)-1,
+               [_SC_XBS5_ILP32_OFFBIG] = sizeof(long)==4 ? 1 : JT_ZERO,
+               [_SC_XBS5_LP64_OFF64] = sizeof(long)==8 ? 1 : JT_ZERO,
                [_SC_XBS5_LPBIG_OFFBIG] = -1,
                [_SC_XOPEN_LEGACY] = -1,
                [_SC_XOPEN_REALTIME] = -1,
                [_SC_XOPEN_REALTIME_THREADS] = -1,
                [_SC_ADVISORY_INFO] = VER,
                [_SC_BARRIERS] = VER,
-               [_SC_BASE] = -1,
-               [_SC_C_LANG_SUPPORT] = -1,
-               [_SC_C_LANG_SUPPORT_R] = -1,
                [_SC_CLOCK_SELECTION] = VER,
                [_SC_CPUTIME] = VER,
                [_SC_THREAD_CPUTIME] = VER,
-               [_SC_DEVICE_IO] = -1,
-               [_SC_DEVICE_SPECIFIC] = -1,
-               [_SC_DEVICE_SPECIFIC_R] = -1,
-               [_SC_FD_MGMT] = -1,
-               [_SC_FIFO] = -1,
-               [_SC_PIPE] = -1,
-               [_SC_FILE_ATTRIBUTES] = -1,
-               [_SC_FILE_LOCKING] = -1,
-               [_SC_FILE_SYSTEM] = -1,
                [_SC_MONOTONIC_CLOCK] = VER,
-               [_SC_MULTI_PROCESS] = -1,
-               [_SC_SINGLE_PROCESS] = -1,
-               [_SC_NETWORKING] = -1,
                [_SC_READER_WRITER_LOCKS] = VER,
                [_SC_SPIN_LOCKS] = VER,
                [_SC_REGEXP] = 1,
-               [_SC_REGEX_VERSION] = -1,
                [_SC_SHELL] = 1,
-               [_SC_SIGNALS] = -1,
                [_SC_SPAWN] = VER,
                [_SC_SPORADIC_SERVER] = -1,
                [_SC_THREAD_SPORADIC_SERVER] = -1,
-               [_SC_SYSTEM_DATABASE] = -1,
-               [_SC_SYSTEM_DATABASE_R] = -1,
                [_SC_TIMEOUTS] = VER,
                [_SC_TYPED_MEMORY_OBJECTS] = -1,
-               [_SC_USER_GROUPS] = -1,
-               [_SC_USER_GROUPS_R] = -1,
                [_SC_2_PBS] = -1,
                [_SC_2_PBS_ACCOUNTING] = -1,
                [_SC_2_PBS_LOCATE] = -1,
                [_SC_2_PBS_MESSAGE] = -1,
                [_SC_2_PBS_TRACK] = -1,
                [_SC_SYMLOOP_MAX] = SYMLOOP_MAX,
-               [_SC_STREAMS] = 0,
+               [_SC_STREAMS] = JT_ZERO,
                [_SC_2_PBS_CHECKPOINT] = -1,
                [_SC_V6_ILP32_OFF32] = -1,
-               [_SC_V6_ILP32_OFFBIG] = 2*(sizeof(long)==4)-1,
-               [_SC_V6_LP64_OFF64] = 2*(sizeof(long)==8)-1,
+               [_SC_V6_ILP32_OFFBIG] = sizeof(long)==4 ? 1 : JT_ZERO,
+               [_SC_V6_LP64_OFF64] = sizeof(long)==8 ? 1 : JT_ZERO,
                [_SC_V6_LPBIG_OFFBIG] = -1,
                [_SC_HOST_NAME_MAX] = HOST_NAME_MAX,
                [_SC_TRACE] = -1,
@@ -209,20 +153,20 @@ long sysconf(int name)
                [_SC_IPV6] = VER,
                [_SC_RAW_SOCKETS] = VER,
                [_SC_V7_ILP32_OFF32] = -1,
-               [_SC_V7_ILP32_OFFBIG] = 2*(sizeof(long)==4)-1,
-               [_SC_V7_LP64_OFF64] = 2*(sizeof(long)==8)-1,
+               [_SC_V7_ILP32_OFFBIG] = sizeof(long)==4 ? 1 : JT_ZERO,
+               [_SC_V7_LP64_OFF64] = sizeof(long)==8 ? 1 : JT_ZERO,
                [_SC_V7_LPBIG_OFFBIG] = -1,
                [_SC_SS_REPL_MAX] = -1,
                [_SC_TRACE_EVENT_NAME_MAX] = -1,
                [_SC_TRACE_NAME_MAX] = -1,
                [_SC_TRACE_SYS_MAX] = -1,
                [_SC_TRACE_USER_EVENT_MAX] = -1,
-               [_SC_XOPEN_STREAMS] = 0,
+               [_SC_XOPEN_STREAMS] = JT_ZERO,
                [_SC_THREAD_ROBUST_PRIO_INHERIT] = -1,
                [_SC_THREAD_ROBUST_PRIO_PROTECT] = -1,
        };
 
-       if (name > sizeof(values)/sizeof(values[0])) {
+       if (name >= sizeof(values)/sizeof(values[0]) || !values[name]) {
                errno = EINVAL;
                return -1;
        } else if (values[name] >= -1) {
@@ -252,6 +196,20 @@ long sysconf(int name)
                for (i=cnt=0; i<sizeof set; i++)
                        for (; set[i]; set[i]&=set[i]-1, cnt++);
                return cnt;
+       case JT_PHYS_PAGES & 255:
+       case JT_AVPHYS_PAGES & 255: ;
+               unsigned long long mem;
+               int __lsysinfo(struct sysinfo *);
+               struct sysinfo si;
+               __lsysinfo(&si);
+               if (!si.mem_unit) si.mem_unit = 1;
+               if (name==_SC_PHYS_PAGES) mem = si.totalram;
+               else mem = si.freeram + si.bufferram;
+               mem *= si.mem_unit;
+               mem /= PAGE_SIZE;
+               return (mem > LONG_MAX) ? LONG_MAX : mem;
+       case JT_ZERO & 255:
+               return 0;
        }
        return values[name];
 }