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test can be allowed to run if fopen() is capable of fopen()ing 

SAFETY_MARGIN additional files once that we have already open()ed
the big bunch of file descriptors.
This commit is contained in:
Yang Tse 2007-04-04 03:19:59 +00:00
parent 27d2d78059
commit ec8019b2a8
2 changed files with 40 additions and 38 deletions
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39
tests/libtest/lib518.c
View File

@ -65,23 +65,23 @@ static void close_file_descriptors(void)
fd = NULL;
}
static int stdio_limit_256(void)
static int fopen_works(void)
{
FILE *fpa[300];
FILE *fpa[SAFETY_MARGIN];
int i;
int ret = 0;
int ret = 1;
for (i = 0; i < 300; i++) {
for (i = 0; i < SAFETY_MARGIN; i++) {
fpa[i] = NULL;
}
for (i = 0; i < 300; i++) {
for (i = 0; i < SAFETY_MARGIN; i++) {
fpa[i] = fopen(DEV_NULL, "r");
if (fpa[i] == NULL) {
ret = -1;
ret = 0;
break;
}
}
for (i = 0; i < 300; i++) {
for (i = 0; i < SAFETY_MARGIN; i++) {
if (fpa[i] != NULL)
fclose(fpa[i]);
}
@ -258,18 +258,6 @@ static int rlimit(int keep_open)
num_open.rlim_max = NUM_OPEN;
/* verify that we don't have an ancient stdio */
if (((size_t)(num_open.rlim_max) > (size_t)256) && stdio_limit_256()) {
sprintf(strbuff1, fmt, num_open.rlim_max);
sprintf(strbuff, "fds needed %s > stdio limit 256",
strbuff1);
store_errmsg(strbuff, 0);
fprintf(stderr, "%s\n", msgbuff);
free(memchunk);
return -12;
}
/* verify that we won't overflow size_t in malloc() */
if ((size_t)(num_open.rlim_max) > ((size_t)-1) / sizeof(*fd)) {
@ -407,6 +395,19 @@ static int rlimit(int keep_open)
#endif /* using a FD_SETSIZE bound select() */
/* test stdio's capability to fopen() SAFETY_MARGIN additional files */
if (!fopen_works()) {
sprintf(strbuff1, fmt, num_open.rlim_max);
sprintf(strbuff, "stdio fopen() fails with %s open() files",
strbuff1);
store_errmsg(strbuff, 0);
fprintf(stderr, "%s\n", msgbuff);
close_file_descriptors();
free(memchunk);
return -12;
}
/* free the chunk of memory we were reserving so that it
becomes becomes available to the test */

39
tests/libtest/lib537.c
View File

@ -67,23 +67,23 @@ static void close_file_descriptors(void)
fd = NULL;
}
static int stdio_limit_256(void)
static int fopen_works(void)
{
FILE *fpa[300];
FILE *fpa[SAFETY_MARGIN];
int i;
int ret = 0;
int ret = 1;
for (i = 0; i < 300; i++) {
for (i = 0; i < SAFETY_MARGIN; i++) {
fpa[i] = NULL;
}
for (i = 0; i < 300; i++) {
for (i = 0; i < SAFETY_MARGIN; i++) {
fpa[i] = fopen(DEV_NULL, "r");
if (fpa[i] == NULL) {
ret = -1;
ret = 0;
break;
}
}
for (i = 0; i < 300; i++) {
for (i = 0; i < SAFETY_MARGIN; i++) {
if (fpa[i] != NULL)
fclose(fpa[i]);
}
@ -248,18 +248,6 @@ static int rlimit(int keep_open)
num_open.rlim_max = nitems;
}
/* verify that we don't have an ancient stdio */
if (((size_t)(num_open.rlim_max) > (size_t)256) && stdio_limit_256()) {
sprintf(strbuff1, fmt, num_open.rlim_max);
sprintf(strbuff, "fds needed %s > stdio limit 256",
strbuff1);
store_errmsg(strbuff, 0);
fprintf(stderr, "%s\n", msgbuff);
free(memchunk);
return -10;
}
/* verify that we won't overflow size_t in malloc() */
if ((size_t)(num_open.rlim_max) > ((size_t)-1) / sizeof(*fd)) {
@ -411,6 +399,19 @@ static int rlimit(int keep_open)
#endif /* using a FD_SETSIZE bound select() */
/* test stdio's capability to fopen() SAFETY_MARGIN additional files */
if (!fopen_works()) {
sprintf(strbuff1, fmt, num_open.rlim_max);
sprintf(strbuff, "stdio fopen() fails with %s open() files",
strbuff1);
store_errmsg(strbuff, 0);
fprintf(stderr, "%s\n", msgbuff);
close_file_descriptors();
free(memchunk);
return -10;
}
/* free the chunk of memory we were reserving so that it
becomes becomes available to the test */