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Make atacontrol(8) rebuild work when /usr is not mounted or from /rescue

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PR:		bin/125680
MFC after:	1 month
Tested by:	Stef Walter
This commit is contained in:
Antoine Brodin 2008-08-06 18:08:02 +00:00
parent 9b11881569
commit 5718b3f2c0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=181349
1 changed files with 25 additions and 6 deletions
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31
sbin/atacontrol/atacontrol.c
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@ -37,6 +37,7 @@
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
static const char *
mode2str(int mode)
@ -517,12 +518,30 @@ main(int argc, char **argv)
if (ioctl(fd, IOCATARAIDREBUILD, &array) < 0)
warn("ioctl(IOCATARAIDREBUILD)");
else {
char buffer[128];
sprintf(buffer, "/usr/bin/nice -n 20 /bin/dd "
"if=/dev/ar%d of=/dev/null bs=1m &",
array);
if (system(buffer))
warn("background dd");
char device[64];
char *buffer;
ssize_t len;
int arfd;
if (daemon(0, 1) == -1)
err(1, "daemon");
nice(20);
snprintf(device, sizeof(device), "/dev/ar%d",
array);
if ((arfd = open(device, O_RDONLY)) == -1)
err(1, "open %s", device);
if ((buffer = malloc(1024 * 1024)) == NULL)
err(1, "malloc");
while ((len = read(arfd, buffer, 1024 * 1024)) > 0)
;
if (len == -1)
err(1, "read");
else
fprintf(stderr,
"atacontrol: ar%d rebuild completed\n",
array);
free(buffer);
close(arfd);
}
exit(EX_OK);
}