diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/libtest/lib518.c | 13 | ||||
| -rw-r--r-- | tests/libtest/lib537.c | 13 |
2 files changed, 22 insertions, 4 deletions
diff --git a/tests/libtest/lib518.c b/tests/libtest/lib518.c index 1997b2f9e..b2aa0554c 100644 --- a/tests/libtest/lib518.c +++ b/tests/libtest/lib518.c @@ -77,6 +77,8 @@ static int fopen_works(void) for (i = 0; i < 3; i++) { fpa[i] = fopen(DEV_NULL, "r"); if (fpa[i] == NULL) { + store_errmsg("fopen() failed", ERRNO); + fprintf(stderr, "%s\n", msgbuff); ret = 0; break; } @@ -394,11 +396,18 @@ static int rlimit(int keep_open) #endif /* using a FD_SETSIZE bound select() */ - /* test stdio's capability to fopen() SAFETY_MARGIN additional files */ + /* + * Old or 'backwards compatible' implementations of stdio do not allow + * handling of streams with an underlying file descriptor number greater + * than 255, even when allowing high numbered file descriptors for sockets. + * At this point we have a big number of file descriptors which have been + * opened using dup(), so lets test the stdio implementation and discover + * if it is capable of fopen()ing some additional files. + */ if (!fopen_works()) { sprintf(strbuff1, fmt, num_open.rlim_max); - sprintf(strbuff, "stdio fopen() fails with %s open() files", + sprintf(strbuff, "stdio fopen() fails with %s fds open()", strbuff1); store_errmsg(strbuff, 0); fprintf(stderr, "%s\n", msgbuff); diff --git a/tests/libtest/lib537.c b/tests/libtest/lib537.c index d59957430..eecda4626 100644 --- a/tests/libtest/lib537.c +++ b/tests/libtest/lib537.c @@ -78,6 +78,8 @@ static int fopen_works(void) for (i = 0; i < 3; i++) { fpa[i] = fopen(DEV_NULL, "r"); if (fpa[i] == NULL) { + store_errmsg("fopen() failed", ERRNO); + fprintf(stderr, "%s\n", msgbuff); ret = 0; break; } @@ -397,11 +399,18 @@ static int rlimit(int keep_open) #endif /* using a FD_SETSIZE bound select() */ - /* test stdio's capability to fopen() SAFETY_MARGIN additional files */ + /* + * Old or 'backwards compatible' implementations of stdio do not allow + * handling of streams with an underlying file descriptor number greater + * than 255, even when allowing high numbered file descriptors for sockets. + * At this point we have a big number of file descriptors which have been + * opened using dup(), so lets test the stdio implementation and discover + * if it is capable of fopen()ing some additional files. + */ if (!fopen_works()) { sprintf(strbuff1, fmt, num_open.rlim_max); - sprintf(strbuff, "stdio fopen() fails with %s open() files", + sprintf(strbuff, "stdio fopen() fails with %s fds open()", strbuff1); store_errmsg(strbuff, 0); fprintf(stderr, "%s\n", msgbuff); |