Fixed macros for temporarily relinquishing and restoring setuid/setgid
privileges so that they never change the real user and group IDs of
the calling process.
The setre[ug]id() calls are still used in the REDUCE_PERM macro (with
the r[ug]id arguments of -1) so that the call changes the saved user
and group IDs of the process to that specified.
Also, the panic() and perr() functions had insufficient privileges to
delete the problematic file under /var/at.
documented behavior. Only a certain set of file flags were recognized,
and "no" flags did not match files that have corresponding flags bits
turned off.
Fix and extend the -flags functionality as follows:
: -flags [-|+]<flags>,<notflags>
: The flags are specified using symbolic names (see chflags(1)).
: Those with the "no" prefix (except "nodump") are said to be
: <notflags>. Flags in <flags> are checked to be set, and flags in
: <notflags> are checked to be not set. Note that this is different
: from -perm, which only allows the user to specify mode bits that
: are set.
:
: If flags are preceded by a dash (``-''), this primary evaluates
: to true if at least all of the bits in <flags> and none of the bits
: in <notflags> are set in the file's flags bits. If flags are pre-
: ceded by a plus (``+''), this primary evaluates to true if any of
: the bits in <flags> is set in the file's flags bits, or any of the
: bits in <notflags> is not set in the file's flags bits. Otherwise,
: this primary evaluates to true if the bits in <flags> exactly match
: the file's flags bits, and none of the <flags> bits match those of
: <notflags>.
MFC after: 2 weeks
fseek -> fseeko
ftell -> ftello
fseek(x, 0L, 0) -> rewind(x)
NOTE: that fseek/ftell not works for >long offsets per POSIX:
[EOVERFLOW] For fseek( ), the resulting file offset would be a value which
cannot be represented correctly in an object of type long.
[EOVERFLOW] For ftell ( ), the current file offset cannot be represented
correctly in an object of type long.
fseek -> fseeko
ftell -> ftello
NOTE: fseek/ftell not works for >long offsets per POSIX:
[EOVERFLOW] For fseek( ), the resulting file offset would be a value which
cannot be represented correctly in an object of type long.
[EOVERFLOW] For ftell ( ), the current file offset cannot be represented
correctly in an object of type long.
long -> off_t
fseek -> fseeko
NOTE: that fseek not works for >long offsets files per POSIX:
[EOVERFLOW] For fseek( ), the resulting file offset would be a value which
cannot be represented correctly in an object of type long.
strtol -> strtoll
fseek -> fseeko
NOTE: that fseek not works for >long offsets files per POSIX:
[EOVERFLOW] For fseek( ), the resulting file offset would be a value which
cannot be represented correctly in an object of type long.
long -> off_t
strtol -> strtoll
fseek -> fseeko
NOTE: that fseek not works for >long offsets files per POSIX:
[EOVERFLOW] For fseek( ), the resulting file offset would be a value which
cannot be represented correctly in an object of type long.
asprintf(3) when creating the request string, as the length of
a path is defined as unlimited by the standard and limiting the
total request to 4K is awfully arbitrary.
PR: 30054
Submitted by: Joseph Mallett <jmallett@xMach.org>
MFC after: 8 days
