utils: add function for running program

In order to hand off the drm fd to another program we need
to be able to run that other program.

This commit adds an API for running a program with no arguments,
in the background.

diff --git a/src/libply/ply-utils.c b/src/libply/ply-utils.c
index 89e37e932b19ef4a3e14fcf2b2966f23b8dd9227..9d2e6ff693ae6982f6c42ec25092fa0edd771f70 100644 (file)
--- a/src/libply/ply-utils.c
+++ b/src/libply/ply-utils.c
@@ -1015,4 +1015,16 @@ ply_get_device_scale (uint32_t width,
         return device_scale;
 }
 
+bool
+ply_run_program_in_background (const char *program)
+{
+        pid_t pid;
+        int result;
+        char argv[2] = { program, NULL };
+
+        result = posix_spawn (&pid, program, NULL, NULL, argv, NULL);
+
+        return result == 0;
+}
+
 /* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */

diff --git a/src/libply/ply-utils.h b/src/libply/ply-utils.h
index c46603eec6da9c644fba107052c50ce949f77e1a..19c5f90df9bab39242cf9272952399721b02e1e7 100644 (file)
--- a/src/libply/ply-utils.h
+++ b/src/libply/ply-utils.h
@@ -127,6 +127,7 @@ int ply_get_device_scale (uint32_t width,
                           uint32_t height,
                           uint32_t width_mm,
                           uint32_t height_mm);
+bool ply_run_program_in_background (const char *program);
 
 #endif