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fixed a bug in rolling timestamp logfiles

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due to comparing logfile suffixes as 32 bit rather than 64 bit
integers, logfiles with timestamp suffixes that should have been
removed when rolling could be left in place. this has been fixed.
This commit is contained in:
Evan Hunt
2021-10-12 16:31:47 -07:00
parent 76baed3343
commit 9a9e906306
3 changed files with 29 additions and 13 deletions
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22
lib/isc/log.c
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@@ -1088,7 +1088,7 @@ greatest_version(isc_logfile_t *file, int versions, int *greatestp) {
}
static void
insert_sort(int64_t to_keep[], int64_t versions, int version) {
insert_sort(int64_t to_keep[], int64_t versions, int64_t version) {
int i = 0;
while (i < versions && version < to_keep[i]) {
i++;
@@ -1105,12 +1105,13 @@ insert_sort(int64_t to_keep[], int64_t versions, int version) {
static int64_t
last_to_keep(int64_t versions, isc_dir_t *dirp, char *bname, size_t bnamelen) {
if (versions <= 0) {
return INT64_MAX;
}
int64_t to_keep[ISC_LOG_MAX_VERSIONS] = { 0 };
int64_t version = 0;
if (versions <= 0) {
return (INT64_MAX);
}
if (versions > ISC_LOG_MAX_VERSIONS) {
versions = ISC_LOG_MAX_VERSIONS;
}
@@ -1119,6 +1120,9 @@ last_to_keep(int64_t versions, isc_dir_t *dirp, char *bname, size_t bnamelen) {
*/
memset(to_keep, 0, sizeof(to_keep));
while (isc_dir_read(dirp) == ISC_R_SUCCESS) {
char *digit_end = NULL;
char *ename = NULL;
if (dirp->entry.length <= bnamelen ||
strncmp(dirp->entry.name, bname, bnamelen) != 0 ||
dirp->entry.name[bnamelen] != '.')
@@ -1126,8 +1130,7 @@ last_to_keep(int64_t versions, isc_dir_t *dirp, char *bname, size_t bnamelen) {
continue;
}
char *digit_end;
char *ename = &dirp->entry.name[bnamelen + 1];
ename = &dirp->entry.name[bnamelen + 1];
version = strtoull(ename, &digit_end, 10);
if (*digit_end == '\0') {
insert_sort(to_keep, versions, version);
@@ -1145,12 +1148,13 @@ last_to_keep(int64_t versions, isc_dir_t *dirp, char *bname, size_t bnamelen) {
static isc_result_t
remove_old_tsversions(isc_logfile_t *file, int versions) {
isc_result_t result;
char *bname, *digit_end;
const char *dirname;
char *bname = NULL, *digit_end = NULL;
const char *dirname = NULL;
int64_t version, last = INT64_MAX;
size_t bnamelen;
isc_dir_t dir;
char sep = '/';
/*
* It is safe to DE_CONST the file.name because it was copied
* with isc_mem_strdup().