From 2dc3f07bee71b81f494f418d1155b392afe176fb Mon Sep 17 00:00:00 2001 From: Florian Forster Date: Wed, 1 Nov 2006 16:12:14 +0100 Subject: [PATCH] configure.in, utils_mount.c: Improved the detection of the different `getmntent' variants. The check provided by `autoconf' has been completely removed, since it doesn't provide the information we need and it's internals seem to change more often than is practical. --- configure.in | 117 ++++++++++++++++++++++++++++++------------------------ src/utils_mount.c | 14 +++---- 2 files changed, 71 insertions(+), 60 deletions(-) diff --git a/configure.in b/configure.in index b0177dde..bae54892 100644 --- a/configure.in +++ b/configure.in @@ -322,73 +322,88 @@ AC_CHECK_FUNCS(getgrgid getpwuid) AC_CHECK_FUNCS(getifaddrs) # For mount interface -AC_CHECK_FUNCS(getfsent getvfsent listmntent) -AC_CHECK_FUNCS(getfsstat getvfsstat) +#AC_CHECK_FUNCS(getfsent getvfsent) -# Check for different versions of `getmntent' here.. -AC_FUNC_GETMNTENT -if test "x$ac_cv_lib_sun_getmntent" = "xyes" -then - AC_DEFINE(HAVE_SUN_GETMNTENT, 1, - [Define if the function getmntent exists. It's the version from libsun.]) +have_getfsstat="no" +AC_CHECK_FUNCS(getfsstat, [have_getfsstat="yes"]) +have_getvfsstat="no" +AC_CHECK_FUNCS(getvfsstat, [have_getvfsstat="yes"]) +have_listmntent="no" +AC_CHECK_FUNCS(listmntent, [have_listmntent="yes"]) + +have_getmntent="no" +AC_CHECK_FUNCS(getmntent, [have_getmntent="c"]) +if test "x$have_getmntent" = "xno"; then + AC_CHECK_LIB(sun, getmntent, [have_getmntent="sun"]) fi -if test "x$ac_cv_lib_seq_getmntent" = "xyes" -then - AC_DEFINE(HAVE_SEQ_GETMNTENT, 1, - [Define if the function getmntent exists. It's the version from libseq.]) +if test "x$have_getmntent" = "xno"; then + AC_CHECK_LIB(seq, getmntent, [have_getmntent="seq"]) fi -if test "x$ac_cv_lib_gen_getmntent" = "xyes" -then - AC_DEFINE(HAVE_GEN_GETMNTENT, 1, - [Define if the function getmntent exists. It's the version from libgen.]) +if test "x$have_getmntent" = "xno"; then + AC_CHECK_LIB(gen, getmntent, [have_getmntent="gen"]) fi -if test "x$ac_cv_func_getmntent" = "xyes"; then - saveCFLAGS="$CFLAGS" - CFLAGS="-Wall -Werror $CFLAGS" +if test "x$have_getmntent" = "xc"; then AC_CACHE_CHECK([whether getmntent takes one argument], - [fu_cv_getmntent1], + [have_one_getmntent], AC_COMPILE_IFELSE( AC_LANG_PROGRAM([[AC_INCLUDES_DEFAULT +#include #include "$srcdir/src/utils_mount.h"]], - [[(void)getmntent((FILE *)NULL);]] + [[ + FILE *fh; + struct mntent *me; + fh = setmntent ("/etc/mtab", "r"); + me = getmntent (fh); + ]] ), - [fu_cv_getmntent1=yes], - [fu_cv_getmntent1=no] + [have_one_getmntent="yes"], + [have_one_getmntent="no"] ) ) - if test "x$fu_cv_getmntent1" = "xno"; then - AC_CACHE_CHECK([whether getmntent takes two arguments], - [fu_cv_getmntent2], - AC_COMPILE_IFELSE( - AC_LANG_PROGRAM([[AC_INCLUDES_DEFAULT + AC_CACHE_CHECK([whether getmntent takes two arguments], + [have_two_getmntent], + AC_COMPILE_IFELSE( + AC_LANG_PROGRAM([[AC_INCLUDES_DEFAULT +#include #include "$srcdir/src/utils_mount.h"]], - [[(void)getmntent((FILE *)NULL, - (struct mnttab *)NULL);]] - ), - [fu_cv_getmntent2=yes], - [fu_cv_getmntent2=no] - ) + [[ + FILE *fh; + struct mnttab mt; + int status; + fh = fopen ("/etc/mnttab", "r"); + status = getmntent (fh, &mt); + ]] + ), + [have_two_getmntent="yes"], + [have_two_getmntent="no"] ) + ) +fi + +# Check for different versions of `getmntent' here.. + +if test "x$have_getmntent" = "xc"; then + if test "x$have_one_getmntent" = "xyes"; then + AC_DEFINE(HAVE_ONE_GETMNTENT, 1, + [Define if the function getmntent exists and takes one argument.]) + fi + if test "x$have_two_getmntent" = "xyes"; then + AC_DEFINE(HAVE_TWO_GETMNTENT, 1, + [Define if the function getmntent exists and takes two arguments.]) fi - CFLAGS="$saveCFLAGS" -fi -if test "x$fu_cv_getmntent1" = "xyes"; then - AC_DEFINE(HAVE_GETMNTENT1, - 1, - [Define if there is a function named getmntent - for reading the list of mounted filesystems, and - that function takes a single argument. (4.3BSD, - SunOS, HP-UX, Dynix, Irix, Linux)] - ) fi -if test "x$fu_cv_getmntent2" = "xyes"; then - AC_DEFINE(HAVE_GETMNTENT2, - 1, - [Define if there is a function named getmntent - for reading the list of mounted filesystems, and - that function takes two arguments. (SVR4)] - ) +if test "x$have_getmntent" = "xsun"; then + AC_DEFINE(HAVE_SUN_GETMNTENT, 1, + [Define if the function getmntent exists. It's the version from libsun.]) +fi +if test "x$have_getmntent" = "xseq"; then + AC_DEFINE(HAVE_SEQ_GETMNTENT, 1, + [Define if the function getmntent exists. It's the version from libseq.]) +fi +if test "x$have_getmntent" = "xgen"; then + AC_DEFINE(HAVE_GEN_GETMNTENT, 1, + [Define if the function getmntent exists. It's the version from libgen.]) fi # Check for structures diff --git a/src/utils_mount.c b/src/utils_mount.c index 38ec24f0..a02e5690 100644 --- a/src/utils_mount.c +++ b/src/utils_mount.c @@ -502,7 +502,7 @@ static cu_mount_t *cu_mount_getfsstat (void) /* #endif HAVE_GETVFSSTAT || HAVE_GETFSSTAT */ /* Solaris (SunOS 10): int getmntent(FILE *fp, struct mnttab *mp); */ -#elif HAVE_GEN_GETMNTENT +#elif HAVE_TWO_GETMNTENT || HAVE_GEN_GETMNTENT || HAVE_SUN_GETMNTENT static cu_mount_t *cu_mount_gen_getmntent (void) { struct mnttab mt; @@ -551,17 +551,13 @@ static cu_mount_t *cu_mount_gen_getmntent (void) return (first); } /* static cu_mount_t *cu_mount_gen_getmntent (void) */ -/* #endif HAVE_GEN_GETMNTENT */ +/* #endif HAVE_TWO_GETMNTENT || HAVE_GEN_GETMNTENT || HAVE_SUN_GETMNTENT */ #elif HAVE_SEQ_GETMNTENT #warn "This version of `getmntent' hat not yet been implemented!" /* #endif HAVE_SEQ_GETMNTENT */ -#elif HAVE_SUN_GETMNTENT -#warn "This version of `getmntent' hat not yet been implemented!" -/* #endif HAVE_SUN_GETMNTENT */ - -#elif HAVE_GETMNTENT +#elif HAVE_ONE_GETMNTENT static cu_mount_t *cu_mount_getmntent (void) { FILE *fp; @@ -615,7 +611,7 @@ static cu_mount_t *cu_mount_getmntent (void) return (first); } -#endif /* HAVE_GETMNTENT */ +#endif /* HAVE_ONE_GETMNTENT */ /* *** *** *** ******************************************** *** *** *** */ /* *** *** *** *** *** *** public functions *** *** *** *** *** *** */ @@ -644,7 +640,7 @@ cu_mount_t *cu_mount_getlist(cu_mount_t **list) new = cu_mount_getfsstat (); #elif HAVE_GEN_GETMNTENT new = cu_mount_gen_getmntent (); -#elif HAVE_GETMNTENT +#elif HAVE_ONE_GETMNTENT new = cu_mount_getmntent (); #else new = NULL; -- 2.11.0