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configure: check for prlimit

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Update configure and make code compilable if prlimit() is not present.
Since the code is suspicious do not cope yet with it's replacement
with  set/getrlimit().
This commit is contained in:
Zdenek Kabelac 2019-08-26 17:19:16 +02:00
parent a50c127904
commit 55f1d8a269
4 changed files with 8 additions and 3 deletions
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4
configure vendored
View File

@ -1715,7 +1715,7 @@ Optional Packages:
cache_restore tool: [autodetect]
--with-vdo=TYPE vdo support: internal/none [internal]
--with-vdo-format=PATH vdoformat tool: [autodetect]
--with-writecache=TYPE writecache support: internal/none [internal]
--with-writecache=TYPE writecache support: internal/none [none]
--with-ocfdir=DIR install OCF files in
[PREFIX/lib/ocf/resource.d/lvm2]
--with-default-pid-dir=PID_DIR
@ -6647,7 +6647,7 @@ $as_echo "#define _REENTRANT 1" >>confdefs.h
################################################################################
for ac_func in ftruncate gethostname getpagesize gettimeofday localtime_r \
memchr memset mkdir mkfifo munmap nl_langinfo pselect realpath rmdir setenv \
memchr memset mkdir mkfifo munmap nl_langinfo prlimit pselect realpath rmdir setenv \
setlocale strcasecmp strchr strcspn strdup strerror strncasecmp strndup \
strrchr strspn strstr strtol strtoul uname
do :

2
configure.ac
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@ -153,7 +153,7 @@ AC_DEFINE([_REENTRANT], 1, [Define to use re-entrant thread safe versions])
################################################################################
dnl -- Check for functions
AC_CHECK_FUNCS([ftruncate gethostname getpagesize gettimeofday localtime_r \
memchr memset mkdir mkfifo munmap nl_langinfo pselect realpath rmdir setenv \
memchr memset mkdir mkfifo munmap nl_langinfo prlimit pselect realpath rmdir setenv \
setlocale strcasecmp strchr strcspn strdup strerror strncasecmp strndup \
strrchr strspn strstr strtol strtoul uname], , [AC_MSG_ERROR(bailing out)])
AC_FUNC_ALLOCA

3
include/configure.h.in
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@ -292,6 +292,9 @@
/* Define to 1 if you have the <paths.h> header file. */
#undef HAVE_PATHS_H
/* Define to 1 if you have the `prlimit' function. */
#undef HAVE_PRLIMIT
/* Define to 1 if you have the `pselect' function. */
#undef HAVE_PSELECT

2
lib/label/label.c
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@ -873,6 +873,7 @@ static void _free_hints(struct dm_list *hints)
static void _prepare_open_file_limit(struct cmd_context *cmd, unsigned int num_devs)
{
#ifdef HAVE_PRLIMIT
struct rlimit old, new;
unsigned int want = num_devs + BASE_FD_COUNT;
int rv;
@ -909,6 +910,7 @@ static void _prepare_open_file_limit(struct cmd_context *cmd, unsigned int num_d
log_warn("WARNING: cannot set open file limit for scanning %u devices.", num_devs);
return;
}
#endif
}
/*