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authorRich Felker <dalias@aerifal.cx>2011-02-12 00:22:29 -0500
committerRich Felker <dalias@aerifal.cx>2011-02-12 00:22:29 -0500
commit0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 (patch)
tree6eaef0d8a720fa3da580de87b647fff796fe80b3 /src/ipc
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initial check-in, version 0.5.0v0.5.0
Diffstat (limited to 'src/ipc')
-rw-r--r--src/ipc/ftok.c10
-rw-r--r--src/ipc/ipc.h13
-rw-r--r--src/ipc/semctl.c18
-rw-r--r--src/ipc/semget.c12
-rw-r--r--src/ipc/semop.c12
-rw-r--r--src/ipc/shmat.c17
-rw-r--r--src/ipc/shmctl.c12
-rw-r--r--src/ipc/shmdt.c12
-rw-r--r--src/ipc/shmget.c12
9 files changed, 118 insertions, 0 deletions
diff --git a/src/ipc/ftok.c b/src/ipc/ftok.c
new file mode 100644
index 00000000..cd6002ed
--- /dev/null
+++ b/src/ipc/ftok.c
@@ -0,0 +1,10 @@
+#include <sys/ipc.h>
+#include <sys/stat.h>
+
+key_t ftok(const char *path, int id)
+{
+ struct stat st;
+ if (stat(path, &st) < 0) return -1;
+
+ return ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 0xff) << 24));
+}
diff --git a/src/ipc/ipc.h b/src/ipc/ipc.h
new file mode 100644
index 00000000..9edd5ecf
--- /dev/null
+++ b/src/ipc/ipc.h
@@ -0,0 +1,13 @@
+#define IPCOP_semop 1
+#define IPCOP_semget 2
+#define IPCOP_semctl 3
+#define IPCOP_msgsnd 11
+#define IPCOP_msgrcv 12
+#define IPCOP_msgget 13
+#define IPCOP_msgctl 14
+#define IPCOP_shmat 21
+#define IPCOP_shmdt 22
+#define IPCOP_shmget 23
+#define IPCOP_shmctl 24
+
+#define IPC_MODERN 0x100
diff --git a/src/ipc/semctl.c b/src/ipc/semctl.c
new file mode 100644
index 00000000..7ada116b
--- /dev/null
+++ b/src/ipc/semctl.c
@@ -0,0 +1,18 @@
+#include <sys/sem.h>
+#include <stdarg.h>
+#include "syscall.h"
+#include "ipc.h"
+
+int semctl(int id, int num, int cmd, ...)
+{
+ long arg;
+ va_list ap;
+ va_start(ap, cmd);
+ arg = va_arg(ap, long);
+ va_end(ap);
+#ifdef __NR_semctl
+ return syscall4(__NR_semctl, id, num, cmd, arg);
+#else
+ return syscall5(__NR_ipc, IPCOP_semctl, id, num, cmd | 0x100, (long)&arg);
+#endif
+}
diff --git a/src/ipc/semget.c b/src/ipc/semget.c
new file mode 100644
index 00000000..2dcf6eac
--- /dev/null
+++ b/src/ipc/semget.c
@@ -0,0 +1,12 @@
+#include <sys/sem.h>
+#include "syscall.h"
+#include "ipc.h"
+
+int semget(key_t key, int n, int fl)
+{
+#ifdef __NR_semget
+ return syscall3(__NR_semget, key, n, fl);
+#else
+ return syscall4(__NR_ipc, IPCOP_semget, key, n, fl);
+#endif
+}
diff --git a/src/ipc/semop.c b/src/ipc/semop.c
new file mode 100644
index 00000000..48d8a654
--- /dev/null
+++ b/src/ipc/semop.c
@@ -0,0 +1,12 @@
+#include <sys/sem.h>
+#include "syscall.h"
+#include "ipc.h"
+
+int semop(int id, struct sembuf *buf, size_t n)
+{
+#ifdef __NR_semop
+ return syscall3(__NR_semop, id, (long)buf, n);
+#else
+ return syscall5(__NR_ipc, IPCOP_semop, id, n, 0, (long)buf);
+#endif
+}
diff --git a/src/ipc/shmat.c b/src/ipc/shmat.c
new file mode 100644
index 00000000..ff65b6a4
--- /dev/null
+++ b/src/ipc/shmat.c
@@ -0,0 +1,17 @@
+#include <sys/shm.h>
+#include "syscall.h"
+#include "ipc.h"
+
+#ifdef __NR_shmat
+void *shmat(int id, const void *addr, int flag)
+{
+ return syscall3(__NR_shmat, id, (long)addr, flag);
+}
+#else
+void *shmat(int id, const void *addr, int flag)
+{
+ unsigned long ret;
+ ret = syscall5(__NR_ipc, IPCOP_shmat, id, flag, (long)&addr, (long)addr);
+ return (ret > -(unsigned long)SHMLBA) ? (void *)ret : (void *)addr;
+}
+#endif
diff --git a/src/ipc/shmctl.c b/src/ipc/shmctl.c
new file mode 100644
index 00000000..da357fa8
--- /dev/null
+++ b/src/ipc/shmctl.c
@@ -0,0 +1,12 @@
+#include <sys/shm.h>
+#include "syscall.h"
+#include "ipc.h"
+
+int shmctl(int id, int cmd, struct shmid_ds *buf)
+{
+#ifdef __NR_shmctl
+ return syscall3(__NR_shmctl, id, cmd, (long)buf);
+#else
+ return syscall4(__NR_ipc, IPCOP_shmctl, id, cmd | IPC_MODERN, (long)buf);
+#endif
+}
diff --git a/src/ipc/shmdt.c b/src/ipc/shmdt.c
new file mode 100644
index 00000000..e04188f9
--- /dev/null
+++ b/src/ipc/shmdt.c
@@ -0,0 +1,12 @@
+#include <sys/shm.h>
+#include "syscall.h"
+#include "ipc.h"
+
+int shmdt(const void *addr)
+{
+#ifdef __NR_shmdt
+ return syscall1(__NR_shmdt, (long)addr);
+#else
+ return syscall2(__NR_ipc, IPCOP_shmdt, (long)addr);
+#endif
+}
diff --git a/src/ipc/shmget.c b/src/ipc/shmget.c
new file mode 100644
index 00000000..86e254af
--- /dev/null
+++ b/src/ipc/shmget.c
@@ -0,0 +1,12 @@
+#include <sys/shm.h>
+#include "syscall.h"
+#include "ipc.h"
+
+int shmget(key_t key, size_t size, int flag)
+{
+#ifdef __NR_shmget
+ return syscall3(__NR_shmget, key, size, flag);
+#else
+ return syscall4(__NR_ipc, IPCOP_shmget, key, size, flag);
+#endif
+}