If the number of nested #if blocks exceeds 64, nest() increments
the nesting depth and then reports an error. The message includes
the line number for the start of the current #if block, which is
read from past the end of the relevant array.
Avoid the out-of-bounds read by reporting the error and exiting
before the nesting depth has a chance to increase.
Submitted by: Jonathan Nieder <jrnieder@gmail.com>
execvPe() is called by _execvpe(), which we added to implement
posix_spawnp(). We just took execvP() and added the envp argument.
Unfortunately we forgot to change the implementation to use envp over
environ.
This fixes the following piece of code:
| char * const arg[2] = { "env", NULL };
| char * const env[2] = { "FOO=BAR", NULL };
| posix_spawnp(NULL, "/usr/bin/env", NULL, NULL, arg, env);
MFC after: 2 weeks
video console which doesn't take any input from keyboard and hides
all output replacing it with ``spinning'' character (useful for
embedded products and custom installations).
Sponsored by: Sippy Software, Inc.
FTS_NOCHDIR option is used. fts_build() could strip a trailing slash
from path name in post-order visit if a path pointing to an empty
directory was given for fts_open().
PR: bin/133907, kern/134513
Reviewed by: das
Approved by: trasz (mentor)
MFC after: 1 month
The old code used a shell loop to convert each controlling macro
definition into a command-line argument, reading the macro definitions
file each time. The new code converts the list of controlling macros
into a sed script which can run through the list of macro definitions
in one go.
Add some explanatory comments, since the code is quite meta.
Use {} instead of () for redirecting a group of commands.
Submitted by: Jonathan Nieder <jrnieder@gmail.com>
from SUSv4 XSI. Note that the functions are obsoleted, and only
provided to ease porting from System V-like systems. Since sigpause
already exists in compat with different interface, XSI sigpause is
named xsi_sigpause.
Reviewed by: davidxu
MFC after: 3 weeks
long as I remember, and completely superseded by better maintained umass(4).
It's main idea was to optionally avoid CAM dependency for such devices, but
with move ATA to CAM, it is not actual any more.
No objections: hselasky@, thompsa@, arch@
represented a write access that is allowed to override write protection.
Until now, VM_PROT_OVERRIDE_WRITE has been used to write breakpoints into
text pages. Text pages are not just write protected but they are also
copy-on-write. VM_PROT_OVERRIDE_WRITE overrides the write protection on the
text page and triggers the replication of the page so that the breakpoint
will be written to a private copy. However, here is where things become
confused. It is the debugger, not the process being debugged that requires
write access to the copied page. Nonetheless, the copied page is being
mapped into the process with write access enabled. In other words, once the
debugger sets a breakpoint within a text page, the program can write to its
private copy of that text page. Whereas prior to setting the breakpoint, a
SIGSEGV would have occurred upon a write access. VM_PROT_COPY addresses
this problem. The combination of VM_PROT_READ and VM_PROT_COPY forces the
replication of a copy-on-write page even though the access is only for read.
Moreover, the replicated page is only mapped into the process with read
access, and not write access.
Reviewed by: kib
MFC after: 4 weeks
message has been printed is enough to get someones attention. Also remove the
line number for DPRINTF/DPRINTFN, it already prints the funtion name and a
unique message.
Check if large factor is prime before applying Pollard's algorithm;
fixes "factor 2147483647111311". Increase base if p-1 algorithm
reaches 1; fixes "factor 99999999999991".
Testcases from David A Bagley <bagleyd@tux.org>.
Fixes from Joseph Myers <jsm@NetBSD.org>.
Problem rediscovered by an attempt to factor my phone number.
A few other incidental fixes: correct a couple of factually incorrect
comments; use ident string macros; move from 4-clause to 3-clause
BSD licence (University of California copyright).
Obtained from: NetBSD
Main highlights:
(A) The new -B option compresses blank lines around a deleted section
so that blank lines around "paragraphs" of code don't get doubled.
(B) Lenient evaluation of && and || so that #if expressions can be
evaluated even when some of their sub-expressions cannot be.
(C) The evaluator can now handle macros with arguments.
(D) Portability fixes, especially for unifdefall.
Contributions from:
Ben Hutchings at Solarflare Communications (A and B)
Anders H Kaseorg <andersk@mit.edu> (A and C)
Jonathan Nieder <jrnieder@gmail.com> (D)
Obtained from: http://dotat.at/prog/unifdef/
specific sysctls and ptrace interfaces.
This change switches a bit gcore POLA that is summarized here:
- now gcore can recognize threads within the process and handle dumps
on thread-scope
- the process to be analyzed will be stopped during its gcore run
- gcore may not work with processes which are actively being analyzed
by gdb or truss
- the ptrace interface may cause syscalls to return EINTR, thus
interferring with signals handling within the process
Side note: <janitor task> the interface can be further lifted in order to
get rid of the very last procfs interfaces remnants and made more
suitable for copying with sysctl/ptrace interface </janitor task>.
Obtained from: Sandvine Incorporated
Reviewed by: emaste, rwatson
Sponsored by: Sandvine Incorporated
MFC: 1 month
environments.
Please note that this can't be done while such processes run in jails.
Note: in future it would be interesting to find a way to do that
selectively for any desired proccess (choosen by user himself), probabilly
via a ptrace interface or whatever.
Obtained from: Sandvine Incorporated
Reviewed by: emaste, arch@
Sponsored by: Sandvine Incorporated
MFC: 1 month
and moving the default initialization of prec into the else clause.
The clang static analyzer erroneously thought that nsec can be used
uninitialized here; it was not actually possible, but better to make
the code clearer. (Clang can't know that sprintf() won't modify *pi
behind the scenes.)
