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authorUlrich Drepper <drepper@redhat.com>1996-08-29 00:31:18 +0000
committerUlrich Drepper <drepper@redhat.com>1996-08-29 00:31:18 +0000
commit14bab8de31e04b990c2ce83d844f634ec57a6cc6 (patch)
treef6a25bd165f8997c08e58f6f2de69e9d34e0fda0 /sysdeps/generic
parentb236e99d90748f6caf77994e96dc5aaa48ce2993 (diff)
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update from main archive 960828glibc-1.93cvs/libc-960829cvs/libc-1-93
Thu Aug 29 00:28:08 1996 Ulrich Drepper <drepper@cygnus.com> * stdio-common/printf_fp.c (__printf_fp): Use default value `.` if `decimal' char is 0. * C-numeric.c (not_available): New constant. (_nl_C_LC_NUMERIC): Use `not_available' for grouping value. * nss/nsswitch.conf: Example configuration file. * nss/db-Makefile: Example Makefile for generation of databases for nss_db. * nss/Makefile (distribute): Add nsswitch.conf and db-Makefile. 1996-08-28 Paul Eggert <eggert@twinsun.com> * C-messages.c (_nl_C_LC_MESSAGES): Set yesexpr to "^[yY]" and noexpr to "^[nN]"; this conforms to POSIX.2. * C-time.c (_nl_C_LC_TIME): Change %d to %e in d_t_format, to conform to POSIX.2. 1996-08-28 Paul Eggert <eggert@twinsun.com> * C-monetary.c (not_available): New constant. (_nl_C_LC_MONETARY): Set mon_decimal_point to "", and set mon_grouping, int_frac_digits, frac_digits, p_cs_precedes, p_sep_by_space, n_cs_precedes, n_sep_by_space, p_sign_posn, and n_sign_posn to CHAR_MAX, as required by the POSIX Standard. Wed Aug 28 23:12:28 1996 Ulrich Drepper <drepper@cygnus.com> * nss/nss_db/db-XXX.c: Correct function names. They must be `_nss_db_*' instead of `_nss_files_*'. (lookup): `parse_line' returns 1 if succesful. * nss/nss_files/files-service.c (servbyname): Key for database must also contain protocol names. (servbypt): Likewise. Test must also check for protocol. Add `proto' argument. Tue Aug 27 09:56:13 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * MakeTAGS ($P/subdirs.pot): Prefix all file names, not only the first one. Fri Aug 16 16:11:25 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu> * nss/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r): Treat EPFNOSUPPORT and EAFNOSUPPORT as implying NSS_STATUS_UNAVAIL just like ECONNREFUSED already does. (_nss_dns_gethostbyaddr_r): Likewise. * nss/nss_dns/dns-network.c (_nss_dns_getnetbyname_r): Likewise. (_nss_dns_getnetbyaddr_r): Likewise. * sysdeps/mach/hurd/socket.c (socket): For message transmission and RPC errors that indicate that the socket server is not really present and able to do its job, turn the error into EPFNOSUPPORT. * sysdeps/generic/sbrk.c (__sbrk): Get kernel brk address always only if in static libc or if statically linked program uses libc.so.
Diffstat (limited to 'sysdeps/generic')
-rw-r--r--sysdeps/generic/dl-sysdep.c25
-rw-r--r--sysdeps/generic/sbrk.c18
2 files changed, 23 insertions, 20 deletions
diff --git a/sysdeps/generic/dl-sysdep.c b/sysdeps/generic/dl-sysdep.c
index 36349a5658..0dfb499d52 100644
--- a/sysdeps/generic/dl-sysdep.c
+++ b/sysdeps/generic/dl-sysdep.c
@@ -31,21 +31,26 @@ Cambridge, MA 02139, USA. */
extern int _dl_argc;
extern char **_dl_argv;
extern char **_environ;
+extern void _end;
extern void _start (void);
int __libc_enable_secure;
+int __libc_multiple_libcs; /* Defining this here avoids the inclusion
+ of init-first. */
ElfW(Addr)
_dl_sysdep_start (void **start_argptr,
void (*dl_main) (const ElfW(Phdr) *phdr, ElfW(Word) phnum,
ElfW(Addr) *user_entry))
{
- const ElfW(Phdr) *phdr;
- ElfW(Word) phnum;
+ const ElfW(Phdr) *phdr = NULL;
+ ElfW(Word) phnum = 0;
ElfW(Addr) user_entry;
ElfW(auxv_t) *av;
- uid_t uid, euid;
- gid_t gid, egid;
+ uid_t uid = 0;
+ uid_t euid = 0;
+ gid_t gid = 0;
+ gid_t egid = 0;
unsigned int seen;
user_entry = (ElfW(Addr)) &_start;
@@ -103,6 +108,18 @@ _dl_sysdep_start (void **start_argptr,
DL_SYSDEP_INIT;
#endif
+ if (__sbrk (0) == &_end)
+ {
+ /* The dynamic linker was run as a program, and so the initial break
+ starts just after our bss, at &_end. The malloc in dl-minimal.c
+ will consume the rest of this page, so tell the kernel to move the
+ break up that far. When the user program examines its break, it
+ will see this new value and not clobber our data. */
+ size_t pg = __getpagesize ();
+
+ __sbrk (pg - ((&_end - (void *) 0) & (pg - 1)));
+ }
+
(*dl_main) (phdr, phnum, &user_entry);
return user_entry;
}
diff --git a/sysdeps/generic/sbrk.c b/sysdeps/generic/sbrk.c
index d3ea705294..afed5902dc 100644
--- a/sysdeps/generic/sbrk.c
+++ b/sysdeps/generic/sbrk.c
@@ -38,22 +38,8 @@ __sbrk (ptrdiff_t increment)
instances of __brk and __sbrk can share the heap, returning
interleaved pieces of it. */
if (__curbrk == NULL || __libc_multiple_libcs)
- {
- extern void _end;
-
- if (__brk (0) < 0) /* Initialize the break. */
- return (void *) -1;
-
- /* Align break address to page boundary if not happened before. */
- if (!__libc_multiple_libcs && __curbrk == &_end)
- {
- size_t pg = __getpagesize ();
- ptrdiff_t rest = pg - ((&_end - (void *) 0) & (pg - 1));
-
- if (__brk (__curbrk + rest) < 0)
- return (void *) -1;
- }
- }
+ if (__brk (0) < 0) /* Initialize the break. */
+ return (void *) -1;
if (increment == 0)
return __curbrk;