spapr_vscsi: Fix REPORT_LUNS handling

[qemu.git] / util / oslib-posix.c

diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index e00a44c86f0271ab4c430639996f5a1c7d129747..c2eeb4fe40676212e8acb9855e1b01cd4721236f 100644 (file)
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -47,6 +47,9 @@ extern int daemon(int, int);
 #  define QEMU_VMALLOC_ALIGN getpagesize()
 #endif
 
+#include <termios.h>
+#include <unistd.h>
+
 #include <glib/gprintf.h>
 
 #include "config-host.h"
@@ -54,6 +57,7 @@ extern int daemon(int, int);
 #include "trace.h"
 #include "qemu/sockets.h"
 #include <sys/mman.h>
+#include <libgen.h>
 
 #ifdef CONFIG_LINUX
 #include <sys/syscall.h>
@@ -85,6 +89,11 @@ void *qemu_oom_check(void *ptr)
 void *qemu_memalign(size_t alignment, size_t size)
 {
     void *ptr;
+
+    if (alignment < sizeof(void*)) {
+        alignment = sizeof(void*);
+    }
+
 #if defined(_POSIX_C_SOURCE) && !defined(__sun__)
     int ret;
     ret = posix_memalign(&ptr, alignment, size);
@@ -251,3 +260,71 @@ qemu_get_local_state_pathname(const char *relative_pathname)
     return g_strdup_printf("%s/%s", CONFIG_QEMU_LOCALSTATEDIR,
                            relative_pathname);
 }
+
+void qemu_set_tty_echo(int fd, bool echo)
+{
+    struct termios tty;
+
+    tcgetattr(fd, &tty);
+
+    if (echo) {
+        tty.c_lflag |= ECHO | ECHONL | ICANON | IEXTEN;
+    } else {
+        tty.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN);
+    }
+
+    tcsetattr(fd, TCSANOW, &tty);
+}
+
+static char exec_dir[PATH_MAX];
+
+void qemu_init_exec_dir(const char *argv0)
+{
+    char *dir;
+    char *p = NULL;
+    char buf[PATH_MAX];
+
+    assert(!exec_dir[0]);
+
+#if defined(__linux__)
+    {
+        int len;
+        len = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
+        if (len > 0) {
+            buf[len] = 0;
+            p = buf;
+        }
+    }
+#elif defined(__FreeBSD__)
+    {
+        static int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
+        size_t len = sizeof(buf) - 1;
+
+        *buf = '\0';
+        if (!sysctl(mib, ARRAY_SIZE(mib), buf, &len, NULL, 0) &&
+            *buf) {
+            buf[sizeof(buf) - 1] = '\0';
+            p = buf;
+        }
+    }
+#endif
+    /* If we don't have any way of figuring out the actual executable
+       location then try argv[0].  */
+    if (!p) {
+        if (!argv0) {
+            return;
+        }
+        p = realpath(argv0, buf);
+        if (!p) {
+            return;
+        }
+    }
+    dir = dirname(p);
+
+    pstrcpy(exec_dir, sizeof(exec_dir), dir);
+}
+
+char *qemu_get_exec_dir(void)
+{
+    return g_strdup(exec_dir);
+}