From 124fc732c15ef37b7ee9db25b1e9f9b20c799623 Mon Sep 17 00:00:00 2001 From: Zack Weinberg Date: Wed, 7 Mar 2018 14:32:02 -0500 Subject: [PATCH] Add __vsyslog_internal, with same flags as __v*printf_internal. __nldbl___vsyslog_chk will ultimately want to pass PRINTF_LDBL_IS_DBL down to __vfprintf_internal *as well as* possibly setting PRINTF_FORTIFY. To make that possible, we need a __vsyslog_internal that takes the same flags as printf. The code in misc/syslog.c does also get a little simpler. Tested for powerpc and powerpc64le. --- ChangeLog | 20 ++++++++++++++ include/sys/syslog.h | 21 +++++++++------ misc/syslog.c | 36 +++++++++++++------------ sysdeps/ieee754/ldbl-opt/nldbl-compat.c | 2 +- 4 files changed, 53 insertions(+), 26 deletions(-) diff --git a/ChangeLog b/ChangeLog index e96f3c60fe..e3bba2ab5a 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,23 @@ +2018-12-05 Zack Weinberg + Gabriel F. T. Gomes + + * misc/syslog.c: Include libioP.h, not iolibio.h. + (__vsyslog_internal): New function with the former body of + __vsyslog_chk; takes mode_flags argument same as + __v*printf_internal. Call __vfprintf_internal directly. + + (__vsyslog_chk): Now a wrapper around __vsyslog_internal. + Remove libc_hidden_def. + (__syslog, __syslog_chk): Use __vsyslog_internal. + (__vsyslog): Move to just below __syslog. Use __vsyslog_internal. + + * include/sys/syslog.h: Add multiple inclusion guard. + Add prototype for __vsyslog_internal. + Remove declaration and libc_hidden_proto for __vsyslog_chk. + + * sysdeps/ieee754/ldbl-opt/nldbl-compat.c (__nldbl___vsyslog_chk): + Use __vsyslog_internal. + 2018-12-05 Zack Weinberg Gabriel F. T. Gomes diff --git a/include/sys/syslog.h b/include/sys/syslog.h index 3be3189ed1..89d3479ebc 100644 --- a/include/sys/syslog.h +++ b/include/sys/syslog.h @@ -1,11 +1,16 @@ +#ifndef _LIBC_SYS_SYSLOG_H +#define _LIBC_SYS_SYSLOG_H 1 #include - #ifndef _ISOMAC -libc_hidden_proto (syslog) -libc_hidden_proto (vsyslog) -extern void __vsyslog_chk (int __pri, int __flag, const char *__fmt, - __gnuc_va_list __ap) - __attribute__ ((__format__ (__printf__, 3, 0))); -libc_hidden_proto (__vsyslog_chk) -#endif +libc_hidden_proto (syslog) + +/* __vsyslog_internal uses the same mode_flags bits as + __v*printf_internal; see libio/libioP.h. */ +extern void __vsyslog_internal (int pri, const char *fmt, __gnuc_va_list ap, + unsigned int mode_flags) + attribute_hidden + __attribute__ ((__format__ (__printf__, 2, 0))); + +#endif /* _ISOMAC */ +#endif /* syslog.h */ diff --git a/misc/syslog.c b/misc/syslog.c index 644dbe80ec..3a15da41ce 100644 --- a/misc/syslog.c +++ b/misc/syslog.c @@ -53,7 +53,7 @@ static char sccsid[] = "@(#)syslog.c 8.4 (Berkeley) 3/18/94"; #include -#include +#include #include #include @@ -114,24 +114,38 @@ __syslog(int pri, const char *fmt, ...) va_list ap; va_start(ap, fmt); - __vsyslog_chk(pri, -1, fmt, ap); + __vsyslog_internal(pri, fmt, ap, 0); va_end(ap); } ldbl_hidden_def (__syslog, syslog) ldbl_strong_alias (__syslog, syslog) +void +__vsyslog(int pri, const char *fmt, va_list ap) +{ + __vsyslog_internal(pri, fmt, ap, 0); +} +ldbl_weak_alias (__vsyslog, vsyslog) + void __syslog_chk(int pri, int flag, const char *fmt, ...) { va_list ap; va_start(ap, fmt); - __vsyslog_chk(pri, flag, fmt, ap); + __vsyslog_internal(pri, fmt, ap, (flag > 0) ? PRINTF_FORTIFY : 0); va_end(ap); } void __vsyslog_chk(int pri, int flag, const char *fmt, va_list ap) +{ + __vsyslog_internal(pri, fmt, ap, (flag > 0) ? PRINTF_FORTIFY : 0); +} + +void +__vsyslog_internal(int pri, const char *fmt, va_list ap, + unsigned int mode_flags) { struct tm now_tm; time_t now; @@ -215,11 +229,8 @@ __vsyslog_chk(int pri, int flag, const char *fmt, va_list ap) __set_errno (saved_errno); /* We have the header. Print the user's format into the - buffer. */ - if (flag == -1) - vfprintf (f, fmt, ap); - else - __vfprintf_chk (f, flag, fmt, ap); + buffer. */ + __vfprintf_internal (f, fmt, ap, mode_flags); /* Close the memory stream; this will finalize the data into a malloc'd buffer in BUF. */ @@ -316,15 +327,6 @@ __vsyslog_chk(int pri, int flag, const char *fmt, va_list ap) if (buf != failbuf) free (buf); } -libc_hidden_def (__vsyslog_chk) - -void -__vsyslog(int pri, const char *fmt, va_list ap) -{ - __vsyslog_chk (pri, -1, fmt, ap); -} -ldbl_hidden_def (__vsyslog, vsyslog) -ldbl_weak_alias (__vsyslog, vsyslog) static struct sockaddr_un SyslogAddr; /* AF_UNIX address of local logger */ diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-compat.c b/sysdeps/ieee754/ldbl-opt/nldbl-compat.c index bda84af0bb..958bbc1834 100644 --- a/sysdeps/ieee754/ldbl-opt/nldbl-compat.c +++ b/sysdeps/ieee754/ldbl-opt/nldbl-compat.c @@ -843,7 +843,7 @@ attribute_compat_text_section __nldbl___vsyslog_chk (int pri, int flag, const char *fmt, va_list ap) { set_no_long_double (); - __vsyslog_chk (pri, flag, fmt, ap); + __vsyslog_internal (pri, fmt, ap, (flag > 0) ? PRINTF_FORTIFY : 0); clear_no_long_double (); } libc_hidden_def (__nldbl___vsyslog_chk)