diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/chown.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/chown.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/chown.c b/sysdeps/unix/sysv/linux/i386/chown.c index 9addfd0598..8652d0f097 100644 --- a/sysdeps/unix/sysv/linux/i386/chown.c +++ b/sysdeps/unix/sysv/linux/i386/chown.c @@ -38,7 +38,7 @@ */ extern int __syscall_chown (const char *__file, - uid_t __owner, gid_t __group); + __kernel_uid_t __owner, __kernel_gid_t __group); #if defined __NR_lchown || __ASSUME_LCHOWN_SYSCALL > 0 /* Running under Linux > 2.1.80. */ @@ -76,6 +76,13 @@ __real_chown (const char *file, uid_t owner, gid_t group) __libc_missing_32bit_uids = 1; } # endif /* __NR_chown32 */ + if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U)) + || ((group + 1) > (gid_t) ((__kernel_gid_t) -1U))) + { + __set_errno (EINVAL); + return -1; + } + result = INLINE_SYSCALL (chown, 3, file, owner, group); if (result >= 0 || errno != ENOSYS) @@ -105,6 +112,13 @@ __real_chown (const char *file, uid_t owner, gid_t group) __libc_missing_32bit_uids = 1; } # endif /* __NR_chown32 */ + if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U)) + || ((group + 1) > (gid_t) ((__kernel_gid_t) -1U))) + { + __set_errno (EINVAL); + return -1; + } + return INLINE_SYSCALL (chown, 3, file, owner, group); # endif } |