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