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#include <sys/swap.h>
#include <string.h>
#include <errno.h>
#include <mntent.h>
#include "internal.h"
const char swapoff_usage[] = "swapoff block-device\n"
"\n"
"\tStop swapping virtual memory pages on the given device.\n";
extern int
swapoff_fn(const struct FileInfo * i)
{
struct mntent entries[100];
int count = 0;
FILE * swapsTable = setmntent("/proc/swaps", "r");
struct mntent * m;
if (!(swapoff(i->source))) {
if ( swapsTable == 0 ) {
fprintf(stderr, "/etc/swaps: %s\n", strerror(errno));
return 1;
}
while ( (m = getmntent(swapsTable)) != 0 ) {
entries[count].mnt_fsname = strdup(m->mnt_fsname);
entries[count].mnt_dir = strdup(m->mnt_dir);
entries[count].mnt_type = strdup(m->mnt_type);
entries[count].mnt_opts = strdup(m->mnt_opts);
entries[count].mnt_freq = m->mnt_freq;
entries[count].mnt_passno = m->mnt_passno;
count++;
}
endmntent(swapsTable);
if ( (swapsTable = setmntent("/etc/swaps", "w")) ) {
int id;
for ( id = 0; id < count; id++ ) {
int result =
(strcmp(entries[id].mnt_fsname, i->source)==0
||strcmp(entries[id].mnt_dir, i->source)==0);
if ( result )
continue;
else
addmntent(swapsTable, &entries[id]);
}
endmntent(swapsTable);
}
else if ( errno != EROFS )
fprintf(stderr, "/etc/swaps: %s\n", strerror(errno));
return (0);
}
return (-1);
}
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