/* * netsniff-ng - the packet sniffing beast * Copyright 2009, 2010 Daniel Borkmann. * Subject to the GPL, version 2. */ #ifndef DIE_H #define DIE_H #include #include #include #include #include #include #include #include "built_in.h" static inline void panic(const char *format, ...) __check_format_printf(1, 2); static inline void syslog_panic(const char *format, ...) __check_format_printf(1, 2); static inline void syslog_maybe(int may, int priority, const char *format, ...) __check_format_printf(3, 4); static inline void __noreturn die(void) { exit(EXIT_FAILURE); } static inline void __noreturn _die(void) { _exit(EXIT_FAILURE); } static inline void __noreturn panic(const char *format, ...) { va_list vl; va_start(vl, format); vfprintf(stderr, format, vl); va_end(vl); die(); } static inline void __noreturn syslog_panic(const char *format, ...) { va_list vl; va_start(vl, format); vsyslog(LOG_ERR, format, vl); va_end(vl); die(); } static inline void syslog_maybe(int maybe, int priority, const char *format, ...) { if (!!maybe) { va_list vl; va_start(vl, format); vsyslog(priority, format, vl); va_end(vl); } } #endif /* DIE_H */ p-back'>packet-loop-back net-next plumbingsTobias Klauser
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authorEric Biggers <ebiggers@google.com>2016-12-30 17:42:32 -0600
committerDavid S. Miller <davem@davemloft.net>2017-01-01 11:53:34 -0500
commite1a3a60a2ebe991605acb14cd58e39c0545e174e (patch)
treeb71f15a1e819cb409b2ccb665aae1a4e32fb399d
parentf5a0aab84b74de68523599817569c057c7ac1622 (diff)
net: socket: don't set sk_uid to garbage value in ->setattr()
->setattr() was recently implemented for socket files to sync the socket inode's uid to the new 'sk_uid' member of struct sock. It does this by copying over the ia_uid member of struct iattr. However, ia_uid is actually only valid when ATTR_UID is set in ia_valid, indicating that the uid is being changed, e.g. by chown. Other metadata operations such as chmod or utimes leave ia_uid uninitialized. Therefore, sk_uid could be set to a "garbage" value from the stack. Fix this by only copying the uid over when ATTR_UID is set. Fixes: 86741ec25462 ("net: core: Add a UID field to struct sock.") Signed-off-by: Eric Biggers <ebiggers@google.com> Tested-by: Lorenzo Colitti <lorenzo@google.com> Acked-by: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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