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Merge branch 'master' of git.sv.gnu.org:/srv/git/grub

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This commit is contained in:
Vladimir Serbinenko 2013-12-16 20:33:19 +01:00
commit dd05b91f6b
5 changed files with 103 additions and 117 deletions
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22
grub-core/osdep/linux/platform.c
View file

@ -20,6 +20,7 @@
#include <grub/util/install.h>
#include <grub/emu/exec.h>
#include <grub/emu/misc.h>
#include <sys/types.h>
#include <dirent.h>
#include <string.h>
@ -69,17 +70,26 @@ grub_install_get_default_x86_platform (void)
anyway later. So it should be safe to
try to load it here.
*/
grub_util_exec ((const char * []){ "modprobe", "-q",
"efivars", NULL });
grub_util_exec_redirect_all ((const char * []){ "modprobe", "efivars", NULL },
NULL, NULL, "/dev/null");
grub_util_info ("Looking for /sys/firmware/efi ..");
if (is_not_empty_directory ("/sys/firmware/efi"))
{
grub_util_info ("...found");
if (is_64_kernel ())
return "x86_64-efi";
else
return "i386-efi";
}
else if (is_not_empty_directory ("/proc/device-tree"))
return "i386-ieee1275";
else
return "i386-pc";
grub_util_info ("... not found. Looking for /proc/device-tree ..");
if (is_not_empty_directory ("/proc/device-tree"))
{
grub_util_info ("...found");
return "i386-ieee1275";
}
grub_util_info ("... not found");
return "i386-pc";
}

140
grub-core/osdep/unix/exec.c
View file

@ -34,7 +34,8 @@
#include <sys/wait.h>
int
grub_util_exec (const char *const *argv)
grub_util_exec_redirect_all (const char *const *argv, const char *stdin_file,
const char *stdout_file, const char *stderr_file)
{
pid_t pid;
int status = -1;
@ -43,15 +44,39 @@ grub_util_exec (const char *const *argv)
grub_size_t strl = 0;
for (ptr = argv; *ptr; ptr++)
strl += grub_strlen (*ptr) + 1;
if (stdin_file)
strl += grub_strlen (stdin_file) + 2;
if (stdout_file)
strl += grub_strlen (stdout_file) + 2;
if (stderr_file)
strl += grub_strlen (stderr_file) + 3;
pstr = str = xmalloc (strl);
for (ptr = argv; *ptr; ptr++)
{
pstr = grub_stpcpy (pstr, *ptr);
*pstr++ = ' ';
}
if (pstr > str)
pstr--;
*pstr = '\0';
if (stdin_file)
{
*pstr++ = '<';
pstr = grub_stpcpy (pstr, stdin_file);
*pstr++ = ' ';
}
if (stdout_file)
{
*pstr++ = '>';
pstr = grub_stpcpy (pstr, stdout_file);
*pstr++ = ' ';
}
if (stderr_file)
{
*pstr++ = '2';
*pstr++ = '>';
pstr = grub_stpcpy (pstr, stderr_file);
pstr++;
}
*--pstr = '\0';
grub_util_info ("executing %s", str);
grub_free (str);
@ -61,63 +86,7 @@ grub_util_exec (const char *const *argv)
grub_util_error (_("Unable to fork: %s"), strerror (errno));
else if (pid == 0)
{
/* Child. */
/* Close fd's. */
#ifdef GRUB_UTIL
grub_util_devmapper_cleanup ();
grub_diskfilter_fini ();
#endif
/* Ensure child is not localised. */
setenv ("LC_ALL", "C", 1);
execvp ((char *) argv[0], (char **) argv);
exit (127);
}
waitpid (pid, &status, 0);
if (!WIFEXITED (status))
return -1;
return WEXITSTATUS (status);
}
int
grub_util_exec_redirect (const char *const *argv, const char *stdin_file,
const char *stdout_file)
{
pid_t pid;
int status = -1;
char *str, *pstr;
const char *const *ptr;
grub_size_t strl = 0;
for (ptr = argv; *ptr; ptr++)
strl += grub_strlen (*ptr) + 1;
strl += grub_strlen (stdin_file) + 2;
strl += grub_strlen (stdout_file) + 2;
pstr = str = xmalloc (strl);
for (ptr = argv; *ptr; ptr++)
{
pstr = grub_stpcpy (pstr, *ptr);
*pstr++ = ' ';
}
*pstr++ = '<';
pstr = grub_stpcpy (pstr, stdin_file);
*pstr++ = ' ';
*pstr++ = '>';
pstr = grub_stpcpy (pstr, stdout_file);
*pstr = '\0';
grub_util_info ("executing %s", str);
grub_free (str);
pid = fork ();
if (pid < 0)
grub_util_error (_("Unable to fork: %s"), strerror (errno));
else if (pid == 0)
{
int in, out;
int fd;
/* Child. */
/* Close fd's. */
@ -126,18 +95,32 @@ grub_util_exec_redirect (const char *const *argv, const char *stdin_file,
grub_diskfilter_fini ();
#endif
in = open (stdin_file, O_RDONLY);
if (in < 0)
exit (127);
dup2 (in, STDIN_FILENO);
close (in);
if (stdin_file)
{
fd = open (stdin_file, O_RDONLY);
if (fd < 0)
exit (127);
dup2 (fd, STDIN_FILENO);
close (fd);
}
out = open (stdout_file, O_WRONLY | O_CREAT, 0700);
dup2 (out, STDOUT_FILENO);
close (out);
if (stdout_file)
{
fd = open (stdout_file, O_WRONLY | O_CREAT, 0700);
if (fd < 0)
exit (127);
dup2 (fd, STDOUT_FILENO);
close (fd);
}
if (out < 0)
exit (127);
if (stderr_file)
{
fd = open (stderr_file, O_WRONLY | O_CREAT, 0700);
if (fd < 0)
exit (127);
dup2 (fd, STDERR_FILENO);
close (fd);
}
/* Ensure child is not localised. */
setenv ("LC_ALL", "C", 1);
@ -151,10 +134,23 @@ grub_util_exec_redirect (const char *const *argv, const char *stdin_file,
return WEXITSTATUS (status);
}
int
grub_util_exec (const char *const *argv)
{
return grub_util_exec_redirect_all (argv, NULL, NULL, NULL);
}
int
grub_util_exec_redirect (const char *const *argv, const char *stdin_file,
const char *stdout_file)
{
return grub_util_exec_redirect_all (argv, stdin_file, stdout_file, NULL);
}
int
grub_util_exec_redirect_null (const char *const *argv)
{
return grub_util_exec_redirect (argv, "/dev/null", "/dev/null");
return grub_util_exec_redirect_all (argv, "/dev/null", "/dev/null", NULL);
}
pid_t