QMP: add inject-nmi qmp command

[qemu.git] / oslib-posix.c

diff --git a/oslib-posix.c b/oslib-posix.c
index ad44b1763782e98757f121d83abb23cd8449f411..7bc5f7cf0951d047125c2498f812da1c5650529a 100644 (file)
--- a/oslib-posix.c
+++ b/oslib-posix.c
@@ -31,8 +31,7 @@
 #include "trace.h"
 #include "qemu_socket.h"
 
-#if !defined(_POSIX_C_SOURCE) || defined(__sun__)
-static void *oom_check(void *ptr)
+void *qemu_oom_check(void *ptr)
 {
     if (ptr == NULL) {
         fprintf(stderr, "Failed to allocate memory: %s\n", strerror(errno));
@@ -40,7 +39,6 @@ static void *oom_check(void *ptr)
     }
     return ptr;
 }
-#endif
 
 void *qemu_memalign(size_t alignment, size_t size)
 {
@@ -54,9 +52,9 @@ void *qemu_memalign(size_t alignment, size_t size)
         abort();
     }
 #elif defined(CONFIG_BSD)
-    ptr = oom_check(valloc(size));
+    ptr = qemu_oom_check(valloc(size));
 #else
-    ptr = oom_check(memalign(alignment, size));
+    ptr = qemu_oom_check(memalign(alignment, size));
 #endif
     trace_qemu_memalign(alignment, size, ptr);
     return ptr;
@@ -109,3 +107,51 @@ int qemu_pipe(int pipefd[2])
 
     return ret;
 }
+
+int qemu_utimensat(int dirfd, const char *path, const struct timespec *times,
+                   int flags)
+{
+    struct timeval tv[2], tv_now;
+    struct stat st;
+    int i;
+#ifdef CONFIG_UTIMENSAT
+    int ret;
+
+    ret = utimensat(dirfd, path, times, flags);
+    if (ret != -1 || errno != ENOSYS) {
+        return ret;
+    }
+#endif
+    /* Fallback: use utimes() instead of utimensat() */
+
+    /* happy if special cases */
+    if (times[0].tv_nsec == UTIME_OMIT && times[1].tv_nsec == UTIME_OMIT) {
+        return 0;
+    }
+    if (times[0].tv_nsec == UTIME_NOW && times[1].tv_nsec == UTIME_NOW) {
+        return utimes(path, NULL);
+    }
+
+    /* prepare for hard cases */
+    if (times[0].tv_nsec == UTIME_NOW || times[1].tv_nsec == UTIME_NOW) {
+        gettimeofday(&tv_now, NULL);
+    }
+    if (times[0].tv_nsec == UTIME_OMIT || times[1].tv_nsec == UTIME_OMIT) {
+        stat(path, &st);
+    }
+
+    for (i = 0; i < 2; i++) {
+        if (times[i].tv_nsec == UTIME_NOW) {
+            tv[i].tv_sec = tv_now.tv_sec;
+            tv[i].tv_usec = tv_now.tv_usec;
+        } else if (times[i].tv_nsec == UTIME_OMIT) {
+            tv[i].tv_sec = (i == 0) ? st.st_atime : st.st_mtime;
+            tv[i].tv_usec = 0;
+        } else {
+            tv[i].tv_sec = times[i].tv_sec;
+            tv[i].tv_usec = times[i].tv_nsec / 1000;
+        }
+    }
+
+    return utimes(path, &tv[0]);
+}