xnu-3247.1.106.tar.gz

[apple/xnu.git] / libsyscall / wrappers / spawn / posix_spawn.c

diff --git a/libsyscall/wrappers/spawn/posix_spawn.c b/libsyscall/wrappers/spawn/posix_spawn.c
index d3bec4ede7d525535756688db91f9cd0abaaea27..88b6cabf3115709b66480963e5bd4c9941e9a35d 100644 (file)
--- a/libsyscall/wrappers/spawn/posix_spawn.c
+++ b/libsyscall/wrappers/spawn/posix_spawn.c
@@ -38,6 +38,7 @@
 #include <strings.h>
 #include <mach/port.h>
 #include <mach/exception_types.h>
+#include <mach/coalition.h> /* for COALITION_TYPE_MAX */
 
 
 /*
@@ -112,7 +113,6 @@ posix_spawnattr_init(posix_spawnattr_t *attr)
 
                 (*psattrp)->short_padding = 0; 
                 (*psattrp)->flags_padding = 0; 
-                (*psattrp)->int_padding = 0;
 
                /* Default is no new apptype requested */
                (*psattrp)->psa_apptype = POSIX_SPAWN_PROCESS_TYPE_DEFAULT;
@@ -120,7 +120,8 @@ posix_spawnattr_init(posix_spawnattr_t *attr)
                /* Jetsam related */
                (*psattrp)->psa_jetsam_flags = 0;
                (*psattrp)->psa_priority = -1;
-               (*psattrp)->psa_high_water_mark = -1;
+               (*psattrp)->psa_memlimit_active = -1;
+               (*psattrp)->psa_memlimit_inactive = -1;
 
                /* Default is no CPU usage monitor active. */
                (*psattrp)->psa_cpumonitor_percent = 0;
@@ -129,11 +130,26 @@ posix_spawnattr_init(posix_spawnattr_t *attr)
                /* Default is no MAC policy extensions. */
                (*psattrp)->psa_mac_extensions = NULL;
 
-               /* Default is to inherit parent's coalition */
-               (*psattrp)->psa_coalitionid = 0;
+               /* Default is to inherit parent's coalition(s) */
+               (*psattrp)->psa_coalition_info = NULL;
+
+               (*psattrp)->reserved = NULL;
+
+               /*
+                * old coalition field
+                * For backwards compatibility reasons, we set this to 1
+                * which is the first valid coalition id. This will allow
+                * newer user space code to properly spawn processes on
+                * older kernels
+                * (they will just all end up in the same coalition).
+                */
+               (*psattrp)->psa_reserved = 1;
 
                /* Default is no new clamp */
                (*psattrp)->psa_qos_clamp = POSIX_SPAWN_PROC_CLAMP_NONE;
+
+               /* Default is no change to role */
+               (*psattrp)->psa_darwin_role = POSIX_SPAWN_DARWIN_ROLE_NONE;
        }
 
        return (err);
@@ -161,6 +177,8 @@ posix_spawnattr_init(posix_spawnattr_t *attr)
  *             EINVAL  The value specified by attr is invalid.
  */
 static int posix_spawn_destroyportactions_np(posix_spawnattr_t *);
+static int posix_spawn_destroycoalition_info_np(posix_spawnattr_t *);
+
 
 int
 posix_spawnattr_destroy(posix_spawnattr_t *attr)
@@ -172,6 +190,7 @@ posix_spawnattr_destroy(posix_spawnattr_t *attr)
 
        psattr = *(_posix_spawnattr_t *)attr;
        posix_spawn_destroyportactions_np(attr);
+       posix_spawn_destroycoalition_info_np(attr);
 
        free(psattr);
        *attr = NULL;
@@ -736,6 +755,29 @@ posix_spawn_destroyportactions_np(posix_spawnattr_t *attr)
        return 0;
 }
 
+/*
+ * posix_spawn_destroycoalition_info_np
+ * Description: clean up coalition_info struct in posix_spawnattr_t attr
+ */
+static int
+posix_spawn_destroycoalition_info_np(posix_spawnattr_t *attr)
+{
+       _posix_spawnattr_t psattr;
+       struct _posix_spawn_coalition_info *coal_info;
+
+       if (attr == NULL || *attr == NULL)
+               return EINVAL;
+
+       psattr = *(_posix_spawnattr_t *)attr;
+       coal_info = psattr->psa_coalition_info;
+       if (coal_info == NULL)
+               return EINVAL;
+
+       psattr->psa_coalition_info = NULL;
+       free(coal_info);
+       return 0;
+}
+
 /*
  * posix_spawn_appendportaction_np
  * Description: append a port action, grow the array if necessary
@@ -1390,16 +1432,31 @@ posix_spawnattr_setmacpolicyinfo_np(posix_spawnattr_t * __restrict attr,
        return 0;
 }
 
-int posix_spawnattr_setcoalition_np(const posix_spawnattr_t * __restrict attr, uint64_t coalitionid)
+int posix_spawnattr_setcoalition_np(const posix_spawnattr_t * __restrict attr,
+                                   uint64_t coalitionid, int type, int role)
 {
        _posix_spawnattr_t psattr;
+       struct _posix_spawn_coalition_info *coal_info;
 
        if (attr == NULL || *attr == NULL) {
                return EINVAL;
        }
+       if (type < 0 || type > COALITION_TYPE_MAX)
+               return EINVAL;
 
        psattr = *(_posix_spawnattr_t *)attr;
-       psattr->psa_coalitionid = coalitionid;
+
+       coal_info = psattr->psa_coalition_info;
+       if (!coal_info) {
+               coal_info = (struct _posix_spawn_coalition_info *)malloc(sizeof(*coal_info));
+               if (!coal_info)
+                       return ENOMEM;
+               memset(coal_info, 0, sizeof(*coal_info));
+               psattr->psa_coalition_info = coal_info;
+       }
+
+       coal_info->psci_info[type].psci_id   = coalitionid;
+       coal_info->psci_info[type].psci_role = role;
 
        return 0;
 }
@@ -1437,6 +1494,34 @@ posix_spawnattr_get_qos_clamp_np(const posix_spawnattr_t * __restrict attr, uint
        return (0);
 }
 
+int posix_spawnattr_set_darwin_role_np(const posix_spawnattr_t * __restrict attr, uint64_t darwin_role)
+{
+       _posix_spawnattr_t psattr;
+
+       if (attr == NULL || *attr == NULL) {
+               return EINVAL;
+       }
+
+       psattr = *(_posix_spawnattr_t *)attr;
+       psattr->psa_darwin_role = darwin_role;
+
+       return 0;
+}
+
+int
+posix_spawnattr_get_darwin_role_np(const posix_spawnattr_t * __restrict attr, uint64_t * __restrict darwin_rolep)
+{
+       _posix_spawnattr_t psattr;
+
+       if (attr == NULL || *attr == NULL) {
+               return EINVAL;
+       }
+
+       psattr = *(_posix_spawnattr_t *)attr;
+       *darwin_rolep = psattr->psa_darwin_role;
+
+       return (0);
+}
 
 /*
  * posix_spawn
@@ -1511,6 +1596,10 @@ posix_spawn(pid_t * __restrict pid, const char * __restrict path,
                                ad.mac_extensions_size = PS_MAC_EXTENSIONS_SIZE(
                                                ad.mac_extensions->psmx_count);
                        }
+                       if (psattr->psa_coalition_info != NULL) {
+                               ad.coal_info_size = sizeof(struct _posix_spawn_coalition_info);
+                               ad.coal_info = psattr->psa_coalition_info;
+                       }
                }
                if (file_actions != NULL && *file_actions != NULL) {
                        _posix_spawn_file_actions_t psactsp =