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Don't redefine errno(3)

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It is Undefined Behavior to declare errno (see NOTES in its manual page).
Instead of using the errno dummy declaration, use one that doesn't need
a comment.

Signed-off-by: Alejandro Colomar <alx@kernel.org>
This commit is contained in:
Alejandro Colomar 2022-12-21 19:02:25 +01:00 committed by Iker Pedrosa
parent ed69feaaff
commit e2df287aad
24 changed files with 24 additions and 24 deletions
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2
lib/gshadow.c
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@ -502,5 +502,5 @@ int putsgent (const struct sgrp *sgrp, FILE * fp)
return 0; return 0;
} }
#else #else
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /*} SHADOWGRP */ #endif /*} SHADOWGRP */

2
lib/lockpw.c
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@ -81,5 +81,5 @@ int ulckpwdf (void)
return (pw_unlock () && spw_unlock ())? 0 : -1; return (pw_unlock () && spw_unlock ())? 0 : -1;
} }
#else #else
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif #endif

2
lib/nscd.c
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@ -53,6 +53,6 @@ int nscd_flush_cache (const char *service)
return 0; return 0;
} }
#else /* USE_NSCD */ #else /* USE_NSCD */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* USE_NSCD */ #endif /* USE_NSCD */

2
lib/pwauth.c
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@ -207,5 +207,5 @@ int pw_auth (const char *cipher,
return retval; return retval;
} }
#else /* !USE_PAM */ #else /* !USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !USE_PAM */ #endif /* !USE_PAM */

2
lib/selinux.c
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@ -206,5 +206,5 @@ int check_selinux_permit (const char *perm_name)
} }
#else /* !WITH_SELINUX */ #else /* !WITH_SELINUX */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !WITH_SELINUX */ #endif /* !WITH_SELINUX */

2
lib/semanage.c
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@ -357,5 +357,5 @@ done:
return ret; return ret;
} }
#else /* !WITH_SELINUX */ #else /* !WITH_SELINUX */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !WITH_SELINUX */ #endif /* !WITH_SELINUX */

2
lib/sgetspent.c
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@ -182,6 +182,6 @@ struct spwd *sgetspent (const char *string)
return (&spwd); return (&spwd);
} }
#else #else
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif #endif

2
lib/sgroupio.c
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@ -302,5 +302,5 @@ int sgr_sort ()
return commonio_sort_wrt (&gshadow_db, __gr_get_db ()); return commonio_sort_wrt (&gshadow_db, __gr_get_db ());
} }
#else #else
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif #endif

2
lib/shadow.c
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@ -525,6 +525,6 @@ struct spwd *getspnam (const char *name)
return (sp); return (sp);
} }
#else #else
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif #endif

2
lib/sssd.c
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@ -70,6 +70,6 @@ int sssd_flush_cache (int dbflags)
return 0; return 0;
} }
#else /* USE_SSSD */ #else /* USE_SSSD */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* USE_SSSD */ #endif /* USE_SSSD */

2
lib/subordinateio.c
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@ -1097,6 +1097,6 @@ bool release_subid_range(struct subordinate_range *range, enum subid_type id_typ
} }
#else /* !ENABLE_SUBIDS */ #else /* !ENABLE_SUBIDS */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !ENABLE_SUBIDS */ #endif /* !ENABLE_SUBIDS */

2
lib/utent.c
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@ -66,5 +66,5 @@ struct utmp *getutent (void)
return &utmp_buf; return &utmp_buf;
} }
#else #else
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif #endif

2
libmisc/addgrps.c
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@ -109,6 +109,6 @@ int add_groups (const char *list)
return 0; return 0;
} }
#else /* HAVE_SETGROUPS && !USE_PAM */ #else /* HAVE_SETGROUPS && !USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* HAVE_SETGROUPS && !USE_PAM */ #endif /* HAVE_SETGROUPS && !USE_PAM */

2
libmisc/audit_help.c
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@ -82,6 +82,6 @@ void audit_logger_message (const char *message, shadow_audit_result result)
} }
#else /* WITH_AUDIT */ #else /* WITH_AUDIT */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* WITH_AUDIT */ #endif /* WITH_AUDIT */

2
libmisc/find_new_sub_gids.c
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@ -59,6 +59,6 @@ int find_new_sub_gids (gid_t *range_start, unsigned long *range_count)
return 0; return 0;
} }
#else /* !ENABLE_SUBIDS */ #else /* !ENABLE_SUBIDS */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !ENABLE_SUBIDS */ #endif /* !ENABLE_SUBIDS */

2
libmisc/find_new_sub_uids.c
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@ -59,6 +59,6 @@ int find_new_sub_uids (uid_t *range_start, unsigned long *range_count)
return 0; return 0;
} }
#else /* !ENABLE_SUBIDS */ #else /* !ENABLE_SUBIDS */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !ENABLE_SUBIDS */ #endif /* !ENABLE_SUBIDS */

2
libmisc/limits.c
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@ -550,6 +550,6 @@ void setup_limits (const struct passwd *info)
} }
#else /* !USE_PAM */ #else /* !USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !USE_PAM */ #endif /* !USE_PAM */

2
libmisc/obscure.c
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@ -302,5 +302,5 @@ bool obscure (const char *old, const char *new, const struct passwd *pwdp)
} }
#else /* !USE_PAM */ #else /* !USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !USE_PAM */ #endif /* !USE_PAM */

2
libmisc/pam_pass.c
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@ -55,5 +55,5 @@ void do_pam_passwd (const char *user, bool silent, bool change_expired)
(void) pam_end (pamh, PAM_SUCCESS); (void) pam_end (pamh, PAM_SUCCESS);
} }
#else /* !USE_PAM */ #else /* !USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !USE_PAM */ #endif /* !USE_PAM */

2
libmisc/pam_pass_non_interactive.c
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@ -141,5 +141,5 @@ int do_pam_passwd_non_interactive (const char *pam_service,
return ((PAM_SUCCESS == ret) ? 0 : 1); return ((PAM_SUCCESS == ret) ? 0 : 1);
} }
#else /* !USE_PAM */ #else /* !USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !USE_PAM */ #endif /* !USE_PAM */

2
libmisc/pwd2spwd.c
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@ -62,6 +62,6 @@ struct spwd *pwd_to_spwd (const struct passwd *pw)
return &sp; return &sp;
} }
#else /* USE_PAM */ #else /* USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !USE_PAM */ #endif /* !USE_PAM */

2
libmisc/pwdcheck.c
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@ -34,5 +34,5 @@ void passwd_check (const char *user, const char *passwd, unused const char *prog
} }
} }
#else /* USE_PAM */ #else /* USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* USE_PAM */ #endif /* USE_PAM */

2
libmisc/tz.c
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@ -52,6 +52,6 @@
return tzbuf; return tzbuf;
} }
#else /* !USE_PAM */ #else /* !USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !USE_PAM */ #endif /* !USE_PAM */

2
src/login_nopam.c
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@ -335,5 +335,5 @@ static bool string_match (const char *tok, const char *string)
} }
#else /* !USE_PAM */ #else /* !USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */ extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* !USE_PAM */ #endif /* !USE_PAM */