forked from pool/openssh
95 lines
2.9 KiB
Diff
95 lines
2.9 KiB
Diff
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Index: openbsd-compat/port-linux.c
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===================================================================
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RCS file: /home/dtucker/openssh/cvs/openssh/openbsd-compat/port-linux.c,v
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retrieving revision 1.9
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diff -u -p -r1.9 port-linux.c
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--- openbsd-compat/port-linux.c 10 Sep 2010 00:30:25 -0000 1.9
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+++ openbsd-compat/port-linux.c 16 Nov 2010 05:10:13 -0000
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@@ -208,14 +208,21 @@ ssh_selinux_change_context(const char *n
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#endif /* WITH_SELINUX */
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#ifdef LINUX_OOM_ADJUST
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-#define OOM_ADJ_PATH "/proc/self/oom_adj"
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/*
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- * The magic "don't kill me", as documented in eg:
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+ * The magic "don't kill me" values, old and new, as documented in eg:
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* http://lxr.linux.no/#linux+v2.6.32/Documentation/filesystems/proc.txt
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+ * http://lxr.linux.no/#linux+v2.6.36/Documentation/filesystems/proc.txt
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*/
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-#define OOM_ADJ_NOKILL -17
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static int oom_adj_save = INT_MIN;
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+static char *oom_adj_path = NULL;
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+struct {
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+ char *path;
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+ int value;
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+} oom_adjust[] = {
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+ {"/proc/self/oom_score_adj", -1000}, /* new values, 2.6.36 and up */
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+ {"/proc/self/oom_adj", -17}, /* old values, 2.6.35 and down */
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+};
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/*
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* Tell the kernel's out-of-memory killer to avoid sshd.
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@@ -224,23 +231,31 @@ static int oom_adj_save = INT_MIN;
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void
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oom_adjust_setup(void)
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{
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+ int i, value;
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FILE *fp;
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debug3("%s", __func__);
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- if ((fp = fopen(OOM_ADJ_PATH, "r+")) != NULL) {
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- if (fscanf(fp, "%d", &oom_adj_save) != 1)
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- verbose("error reading %s: %s", OOM_ADJ_PATH, strerror(errno));
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- else {
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- rewind(fp);
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- if (fprintf(fp, "%d\n", OOM_ADJ_NOKILL) <= 0)
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- verbose("error writing %s: %s",
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- OOM_ADJ_PATH, strerror(errno));
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- else
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- verbose("Set %s from %d to %d",
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- OOM_ADJ_PATH, oom_adj_save, OOM_ADJ_NOKILL);
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+ for (i = 0; i < 2; i++) {
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+ oom_adj_path = oom_adjust[i].path;
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+ value = oom_adjust[i].value;
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+ if ((fp = fopen(oom_adj_path, "r+")) != NULL) {
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+ if (fscanf(fp, "%d", &oom_adj_save) != 1)
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+ verbose("error reading %s: %s", oom_adj_path,
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+ strerror(errno));
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+ else {
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+ rewind(fp);
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+ if (fprintf(fp, "%d\n", value) <= 0)
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+ verbose("error writing %s: %s",
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+ oom_adj_path, strerror(errno));
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+ else
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+ verbose("Set %s from %d to %d",
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+ oom_adj_path, oom_adj_save, value);
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+ }
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+ fclose(fp);
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+ return;
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}
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- fclose(fp);
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}
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+ oom_adj_path = NULL;
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}
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/* Restore the saved OOM adjustment */
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@@ -250,13 +265,14 @@ oom_adjust_restore(void)
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FILE *fp;
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debug3("%s", __func__);
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- if (oom_adj_save == INT_MIN || (fp = fopen(OOM_ADJ_PATH, "w")) == NULL)
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+ if (oom_adj_save == INT_MIN || oom_adj_save == NULL ||
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+ (fp = fopen(oom_adj_path, "w")) == NULL)
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return;
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if (fprintf(fp, "%d\n", oom_adj_save) <= 0)
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- verbose("error writing %s: %s", OOM_ADJ_PATH, strerror(errno));
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+ verbose("error writing %s: %s", oom_adj_path, strerror(errno));
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else
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- verbose("Set %s to %d", OOM_ADJ_PATH, oom_adj_save);
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+ verbose("Set %s to %d", oom_adj_path, oom_adj_save);
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fclose(fp);
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return;
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