+2010-08-04 Emilio Pozuelo Monfort <pochu27@gmail.com>
+2017-09-26 Svante Signell <svante.signell@gmail.com>
+
+ * hurd/hurdexec.c (_hurd_exec): Deprecate function.
+ (_hurd_exec_paths): New function.
+ * hurd/hurd.h (_hurd_exec): Deprecate function.
+ (_hurd_exec_paths): Declare function.
+ * hurd/Versions: Export _hurd_exec_paths.
+ * sysdeps/mach/hurd/execve.c: Include <stdlib.h> and <stdio.h>
+ (__execve): Use __getcwd to build absolute path, and use
+ _hurd_exec_paths instead of _hurd_exec.
+ * sysdeps/mach/hurd/spawni.c: Likewise.
+ * sysdeps/mach/hurd/fexecve.c: Use _hurd_exec_paths instead of
+ _hurd_exec.
+
2018-01-08 Dmitry V. Levin <ldv@altlinux.org>
* sysdeps/unix/sysv/linux/tst-ttyname.c (do_in_chroot_1): Skip the
# functions used in macros & inline functions
__errno_location;
}
+ GLIBC_2.27 {
+ # "quasi-internal" functions
+ _hurd_exec_paths;
+ }
HURD_CTHREADS_0.3 {
# weak refs to libthreads functions that libc calls iff libthreads in use
extern FILE *__fopenport (io_t port, const char *mode);
-/* Execute a file, replacing TASK's current program image. */
+/* Deprecated: use _hurd_exec_paths instead. */
extern error_t _hurd_exec (task_t task,
file_t file,
char *const argv[],
- char *const envp[]);
+ char *const envp[]) __attribute_deprecated__;
+
+/* Execute a file, replacing TASK's current program image. */
+
+extern error_t _hurd_exec_paths (task_t task,
+ file_t file,
+ const char *path,
+ const char *abspath,
+ char *const argv[],
+ char *const envp[]);
/* Inform the proc server we have exited with STATUS, and kill the
/* Overlay TASK, executing FILE with arguments ARGV and environment ENVP.
If TASK == mach_task_self (), some ports are dealloc'd by the exec server.
- ARGV and ENVP are terminated by NULL pointers. */
+ ARGV and ENVP are terminated by NULL pointers.
+ Deprecated: use _hurd_exec_paths instead. */
error_t
_hurd_exec (task_t task, file_t file,
char *const argv[], char *const envp[])
+{
+ return _hurd_exec_paths (task, file, NULL, NULL, argv, envp);
+}
+
+link_warning (_hurd_exec,
+ "_hurd_exec is deprecated, use _hurd_exec_paths instead");
+
+/* Overlay TASK, executing FILE with arguments ARGV and environment ENVP.
+ If TASK == mach_task_self (), some ports are dealloc'd by the exec server.
+ ARGV and ENVP are terminated by NULL pointers. PATH is the relative path to
+ FILE and ABSPATH is the absolute path to FILE. Passing NULL, though possible,
+ should be avoided, since then the exec server may not know the path to
+ FILE if FILE is a script, and will then pass /dev/fd/N to the
+ interpreter. */
+error_t
+_hurd_exec_paths (task_t task, file_t file,
+ const char *path, const char *abspath,
+ char *const argv[], char *const envp[])
{
error_t err;
char *args, *env;
/* We have euid != svuid or egid != svgid. POSIX.1 says that exec
sets svuid = euid and svgid = egid. So we must get a new auth
port and reauthenticate everything with it. We'll pass the new
- ports in file_exec instead of our own ports. */
+ ports in file_exec_paths instead of our own ports. */
auth_t newauth;
if (__sigismember (&_hurdsig_traced, SIGKILL))
flags |= EXEC_SIGTRAP;
#endif
- err = __file_exec (file, task, flags,
- args, argslen, env, envlen,
- dtable, MACH_MSG_TYPE_COPY_SEND, dtablesize,
- ports, MACH_MSG_TYPE_COPY_SEND, _hurd_nports,
- ints, INIT_INT_MAX,
- please_dealloc, pdp - please_dealloc,
- &_hurd_msgport, task == __mach_task_self () ? 1 : 0);
+ err = __file_exec_paths (file, task, flags,
+ path ? path : "",
+ abspath ? abspath : "",
+ args, argslen, env, envlen,
+ dtable, MACH_MSG_TYPE_COPY_SEND, dtablesize,
+ ports, MACH_MSG_TYPE_COPY_SEND,
+ _hurd_nports,
+ ints, INIT_INT_MAX,
+ please_dealloc, pdp - please_dealloc,
+ &_hurd_msgport,
+ task == __mach_task_self () ? 1 : 0);
+ /* Fall back for backwards compatibility. This can just be removed
+ when __file_exec goes away. */
+ if (err == MIG_BAD_ID)
+ err = __file_exec (file, task, flags,
+ args, argslen, env, envlen,
+ dtable, MACH_MSG_TYPE_COPY_SEND, dtablesize,
+ ports, MACH_MSG_TYPE_COPY_SEND, _hurd_nports,
+ ints, INIT_INT_MAX,
+ please_dealloc, pdp - please_dealloc,
+ &_hurd_msgport,
+ task == __mach_task_self () ? 1 : 0);
}
/* Release references to the standard ports. */
#include <unistd.h>
#include <hurd.h>
#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
/* Replace the current process, executing FILE_NAME with arguments ARGV and
environment ENVP. ARGV and ENVP are terminated by NULL pointers. */
__execve (const char *file_name, char *const argv[], char *const envp[])
{
error_t err;
- file_t file = __file_name_lookup (file_name, O_EXEC, 0);
+ char *concat_name = NULL;
+ const char *abs_path;
+ file_t file = __file_name_lookup (file_name, O_EXEC, 0);
if (file == MACH_PORT_NULL)
return -1;
+ if (file_name[0] == '/')
+ {
+ /* Already an absolute path */
+ abs_path = file_name;
+ }
+ else
+ {
+ /* Relative path */
+ char *cwd = __getcwd (NULL, 0);
+ if (cwd == NULL)
+ {
+ __mach_port_deallocate (__mach_task_self (), file);
+ return -1;
+ }
+
+ int res = __asprintf (&concat_name, "%s/%s", cwd, file_name);
+ free (cwd);
+ if (res == -1)
+ {
+ __mach_port_deallocate (__mach_task_self (), file);
+ return -1;
+ }
+
+ abs_path = concat_name;
+ }
+
/* Hopefully this will not return. */
- err = _hurd_exec (__mach_task_self (), file, argv, envp);
+ err = _hurd_exec_paths (__mach_task_self (), file,
+ file_name, abs_path, argv, envp);
/* Oh well. Might as well be tidy. */
__mach_port_deallocate (__mach_task_self (), file);
+ free (concat_name);
return __hurd_fail (err);
}
int
fexecve (int fd, char *const argv[], char *const envp[])
{
- error_t err = HURD_DPORT_USE (fd, _hurd_exec (__mach_task_self (), port,
- argv, envp));
+ error_t err = HURD_DPORT_USE (fd, _hurd_exec_paths (__mach_task_self (),
+ port, NULL, NULL,
+ argv, envp));
if (! err)
err = EGRATUITOUS;
return __hurd_fail (err);
#include <spawn.h>
#include <stdlib.h>
#include <string.h>
+#include <stdio.h>
#include <unistd.h>
#include <hurd.h>
#include <hurd/signal.h>
{
pid_t new_pid;
char *path, *p, *name;
+ char *concat_name = NULL, *relpath, *abspath;
+ int res;
size_t len;
size_t pathlen;
short int flags;
that remains visible after an exec is registration with the proc
server, and the inheritance of various values and ports. All those
inherited values and ports are what get collected up and passed in the
- file_exec RPC by an exec call. So we do the proc server registration
- here, following the model of fork (see fork.c). We then collect up
- the inherited values and ports from this (parent) process following
- the model of exec (see hurd/hurdexec.c), modify or replace each value
- that fork would (plus the specific changes demanded by ATTRP and
- FILE_ACTIONS), and make the file_exec RPC on the requested executable
- file with the child process's task port rather than our own. This
- should be indistinguishable from the fork + exec implementation,
+ file_exec_paths RPC by an exec call. So we do the proc server
+ registration here, following the model of fork (see fork.c). We then
+ collect up the inherited values and ports from this (parent) process
+ following the model of exec (see hurd/hurdexec.c), modify or replace each
+ value that fork would (plus the specific changes demanded by ATTRP and
+ FILE_ACTIONS), and make the file_exec_paths RPC on the requested
+ executable file with the child process's task port rather than our own.
+ This should be indistinguishable from the fork + exec implementation,
except that all errors will be detected here (in the parent process)
and return proper errno codes rather than the child dying with 127.
if ((xflags & SPAWN_XFLAGS_USE_PATH) == 0 || strchr (file, '/') != NULL)
/* The FILE parameter is actually a path. */
- err = child_lookup (file, O_EXEC, 0, &execfile);
+ err = child_lookup (relpath = file, O_EXEC, 0, &execfile);
else
{
/* We have to search for FILE on the path. */
}
// We only get here when we are done looking for the file.
+ relpath = startp;
break;
}
while (*p++ != '\0');
if (err)
goto out;
+ if (relpath[0] == '/')
+ {
+ /* Already an absolute path */
+ abspath = relpath;
+ }
+ else
+ {
+ /* Relative path */
+ char *cwd = __getcwd (NULL, 0);
+ if (cwd == NULL)
+ goto out;
+
+ res = __asprintf (&concat_name, "%s/%s", cwd, relpath);
+ free (cwd);
+ if (res == -1)
+ goto out;
+
+ abspath = concat_name;
+ }
+
/* Almost there! */
{
mach_port_t ports[_hurd_nports];
inline error_t exec (file_t file)
{
- return __file_exec (file, task,
- (__sigismember (&_hurdsig_traced, SIGKILL)
- ? EXEC_SIGTRAP : 0),
- args, argslen, env, envlen,
- dtable, MACH_MSG_TYPE_COPY_SEND, dtablesize,
- ports, MACH_MSG_TYPE_COPY_SEND, _hurd_nports,
- ints, INIT_INT_MAX,
- NULL, 0, NULL, 0);
+ error_t err = __file_exec_paths
+ (file, task,
+ __sigismember (&_hurdsig_traced, SIGKILL) ? EXEC_SIGTRAP : 0,
+ relpath, abspath, args, argslen, env, envlen,
+ dtable, MACH_MSG_TYPE_COPY_SEND, dtablesize,
+ ports, MACH_MSG_TYPE_COPY_SEND, _hurd_nports,
+ ints, INIT_INT_MAX,
+ NULL, 0, NULL, 0);
+
+ /* Fallback for backwards compatibility. This can just be removed
+ when __file_exec goes away. */
+ if (err == MIG_BAD_ID)
+ return __file_exec (file, task,
+ (__sigismember (&_hurdsig_traced, SIGKILL)
+ ? EXEC_SIGTRAP : 0),
+ args, argslen, env, envlen,
+ dtable, MACH_MSG_TYPE_COPY_SEND, dtablesize,
+ ports, MACH_MSG_TYPE_COPY_SEND, _hurd_nports,
+ ints, INIT_INT_MAX,
+ NULL, 0, NULL, 0);
+
+ return err;
}
/* Now we are out of things that can fail before the file_exec RPC,
_hurd_port_free (dtable_cells[i], &ulink_dtable[i], dtable[i]);
}
+ free (concat_name);
+
if (err)
/* This hack canonicalizes the error code that we return. */
err = (__hurd_fail (err), errno);
git://sourceware.org / glibc.git / commitdiff