diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | misc/sys/cdefs.h | 9 | ||||
| -rw-r--r-- | sysdeps/gnu/bits/utmp.h | 9 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/s390/bits/utmp.h | 9 |
4 files changed, 27 insertions, 6 deletions
diff --git a/ChangeLog b/ChangeLog index 167ff200e8..d7d81aceb7 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2017-11-15 Martin Sebor <msebor@redhat.com> + + * misc/sys/cdefs.h (__attribute_nonstring__): New macro. + * sysdeps/gnu/bits/utmp.h (struct utmp): Use it. + * sysdeps/unix/sysv/linux/s390/bits/utmp.h (struct utmp): Same. + 2017-11-15 Luke Shumaker <lukeshu@parabola.nu> [BZ #22145] diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h index cfd39d5302..a603cb9df0 100644 --- a/misc/sys/cdefs.h +++ b/misc/sys/cdefs.h @@ -407,6 +407,15 @@ # endif #endif +#if __GNUC_PREREQ (8, 0) +/* Describes a char array whose address can safely be passed as the first + argument to strncpy and strncat, as the char array is not necessarily + a NUL-terminated string. */ +# define __attribute_nonstring__ __attribute__ ((__nonstring__)) +#else +# define __attribute_nonstring__ +#endif + #if (!defined _Static_assert && !defined __cplusplus \ && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \ && (!__GNUC_PREREQ (4, 6) || defined __STRICT_ANSI__)) diff --git a/sysdeps/gnu/bits/utmp.h b/sysdeps/gnu/bits/utmp.h index 2ee11cb706..71c9fa2a9f 100644 --- a/sysdeps/gnu/bits/utmp.h +++ b/sysdeps/gnu/bits/utmp.h @@ -59,10 +59,13 @@ struct utmp { short int ut_type; /* Type of login. */ pid_t ut_pid; /* Process ID of login process. */ - char ut_line[UT_LINESIZE]; /* Devicename. */ + char ut_line[UT_LINESIZE] + __attribute_nonstring__; /* Devicename. */ char ut_id[4]; /* Inittab ID. */ - char ut_user[UT_NAMESIZE]; /* Username. */ - char ut_host[UT_HOSTSIZE]; /* Hostname for remote login. */ + char ut_user[UT_NAMESIZE] + __attribute_nonstring__; /* Username. */ + char ut_host[UT_HOSTSIZE] + __attribute_nonstring__; /* Hostname for remote login. */ struct exit_status ut_exit; /* Exit status of a process marked as DEAD_PROCESS. */ /* The ut_session and ut_tv fields must be the same size when compiled diff --git a/sysdeps/unix/sysv/linux/s390/bits/utmp.h b/sysdeps/unix/sysv/linux/s390/bits/utmp.h index 36114c3b0e..f754f374b5 100644 --- a/sysdeps/unix/sysv/linux/s390/bits/utmp.h +++ b/sysdeps/unix/sysv/linux/s390/bits/utmp.h @@ -59,10 +59,13 @@ struct utmp { short int ut_type; /* Type of login. */ pid_t ut_pid; /* Process ID of login process. */ - char ut_line[UT_LINESIZE]; /* Devicename. */ + char ut_line[UT_LINESIZE] + __attribute_nonstring__; /* Devicename. */ char ut_id[4]; /* Inittab ID. */ - char ut_user[UT_NAMESIZE]; /* Username. */ - char ut_host[UT_HOSTSIZE]; /* Hostname for remote login. */ + char ut_user[UT_NAMESIZE] + __attribute_nonstring__; /* Username. */ + char ut_host[UT_HOSTSIZE] + __attribute_nonstring__; /* Hostname for remote login. */ struct exit_status ut_exit; /* Exit status of a process marked as DEAD_PROCESS. */ /* The ut_session and ut_tv fields must be the same size when compiled |