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authorRich Felker <dalias@aerifal.cx>2011-05-28 23:30:47 -0400
committerRich Felker <dalias@aerifal.cx>2011-05-28 23:30:47 -0400
commita0ae0b09368e6dbfa82860187dcd6fdf86d86fee (patch)
tree555e49882b42e32a6b38b51020a3d37a7f42e018 /src/process
parentd6c0c9784615ddb316ace52f3a9e2f025214ba2a (diff)
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add file actions support to posix_spawn
Diffstat (limited to 'src/process')
-rw-r--r--src/process/posix_spawn.c28
-rw-r--r--src/process/posix_spawn_file_actions_addclose.c15
-rw-r--r--src/process/posix_spawn_file_actions_adddup2.c16
-rw-r--r--src/process/posix_spawn_file_actions_addopen.c19
-rw-r--r--src/process/posix_spawn_file_actions_destroy.c9
5 files changed, 85 insertions, 2 deletions
diff --git a/src/process/posix_spawn.c b/src/process/posix_spawn.c
index 7018c37e..59f4a8bb 100644
--- a/src/process/posix_spawn.c
+++ b/src/process/posix_spawn.c
@@ -2,7 +2,9 @@
#include <unistd.h>
#include <signal.h>
#include <stdint.h>
+#include <fcntl.h>
#include "syscall.h"
+#include "fdop.h"
extern char **environ;
@@ -49,6 +51,32 @@ int __posix_spawnx(pid_t *res, const char *path,
__syscall(SYS_setuid, __syscall(SYS_getuid)) ))
_exit(127);
+ if (fa) {
+ struct fdop *op;
+ int ret, fd;
+ for (op = fa->__actions; op; op = op->next) {
+ switch(op->cmd) {
+ case FDOP_CLOSE:
+ ret = __syscall(SYS_close, op->fd);
+ break;
+ case FDOP_DUP2:
+ ret = __syscall(SYS_dup2, op->fd, op->newfd)<0;
+ break;
+ case FDOP_OPEN:
+ fd = __syscall(SYS_open, op->path,
+ op->oflag | O_LARGEFILE, op->mode);
+ if (fd == op->fd) {
+ ret = 0;
+ } else {
+ ret = __syscall(SYS_dup2, fd, op->fd)<0;
+ __syscall(SYS_close, fd);
+ }
+ break;
+ }
+ if (ret) _exit(127);
+ }
+ }
+
sigprocmask(SIG_SETMASK, (attr->__flags & POSIX_SPAWN_SETSIGMASK)
? &attr->__mask : &oldmask, 0);
diff --git a/src/process/posix_spawn_file_actions_addclose.c b/src/process/posix_spawn_file_actions_addclose.c
new file mode 100644
index 00000000..44c6314f
--- /dev/null
+++ b/src/process/posix_spawn_file_actions_addclose.c
@@ -0,0 +1,15 @@
+#include <spawn.h>
+#include <stdlib.h>
+#include <errno.h>
+#include "fdop.h"
+
+int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *fa, int fd)
+{
+ struct fdop *op = malloc(sizeof *op);
+ if (!op) return ENOMEM;
+ op->cmd = FDOP_CLOSE;
+ op->fd = fd;
+ op->next = fa->__actions;
+ fa->__actions = op;
+ return 0;
+}
diff --git a/src/process/posix_spawn_file_actions_adddup2.c b/src/process/posix_spawn_file_actions_adddup2.c
new file mode 100644
index 00000000..9209ee7c
--- /dev/null
+++ b/src/process/posix_spawn_file_actions_adddup2.c
@@ -0,0 +1,16 @@
+#include <spawn.h>
+#include <stdlib.h>
+#include <errno.h>
+#include "fdop.h"
+
+int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *fa, int fd, int newfd)
+{
+ struct fdop *op = malloc(sizeof *op);
+ if (!op) return ENOMEM;
+ op->cmd = FDOP_DUP2;
+ op->fd = fd;
+ op->newfd = newfd;
+ op->next = fa->__actions;
+ fa->__actions = op;
+ return 0;
+}
diff --git a/src/process/posix_spawn_file_actions_addopen.c b/src/process/posix_spawn_file_actions_addopen.c
new file mode 100644
index 00000000..5e2c86d9
--- /dev/null
+++ b/src/process/posix_spawn_file_actions_addopen.c
@@ -0,0 +1,19 @@
+#include <spawn.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "fdop.h"
+
+int posix_spawn_file_actions_addopen(posix_spawn_file_actions_t *fa, int fd, const char *path, int flags, mode_t mode)
+{
+ struct fdop *op = malloc(sizeof *op + strlen(path) + 1);
+ if (!op) return ENOMEM;
+ op->cmd = FDOP_OPEN;
+ op->fd = fd;
+ op->oflag = flags;
+ op->mode = mode;
+ strcpy(op->path, path);
+ op->next = fa->__actions;
+ fa->__actions = op;
+ return 0;
+}
diff --git a/src/process/posix_spawn_file_actions_destroy.c b/src/process/posix_spawn_file_actions_destroy.c
index c2501ddf..3251babb 100644
--- a/src/process/posix_spawn_file_actions_destroy.c
+++ b/src/process/posix_spawn_file_actions_destroy.c
@@ -1,9 +1,14 @@
#include <spawn.h>
#include <stdlib.h>
+#include "fdop.h"
int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *fa)
{
- // FIXME
- free(fa->__actions);
+ struct fdop *op = fa->__actions, *next;
+ while (op) {
+ next = op->next;
+ free(op);
+ op = next;
+ }
return 0;
}