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ce4c4d4ad592ad4678b11533c5417086365fb410
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Alejandro ColomarandIker Pedrosa ce4c4d4ad5 lib/string/sprintf.h: Add SNPRINTF() macro 
It wraps snprintf(3) so that it performs some steps that one might
forget, or might be prone to accidents:

-  It calculates the size of the destination buffer, and makes sure it's
   an array (otherwise, using sizeof(s) would be very bad).

-  It calculates if there's truncation or an error, returning -1 if so.

BTW, this macro doesn't have any issues of double evaluation, because
sizeof() doesn't evaluate its argument (unless it's a VLA, but then the
static_assert(3) within NITEMS() makes sure VLAs are not allowed).

This macro is very similar to STRTCPY(), defined in
<lib/string/strtcpy.h>.

Signed-off-by: Alejandro Colomar <alx@kernel.org>
2023-12-15 16:41:47 +01:00
..
string
lib/string/sprintf.h: Add SNPRINTF() macro
2023-12-15 16:41:47 +01:00
.indent.pro
[svn-upgrade] Integrating new upstream version, shadow (4.0.8)
2007-10-07 11:46:07 +00:00
addgrps.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
age.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
agetpass.c
lib/agetpass.h: Move prototypes to dedicated header
2023-09-04 08:57:18 -05:00
agetpass.h
lib/attr.h, lib/, src/: Move attributes to new header file
2023-12-03 09:56:13 -06:00
alloc.c
lib, libmisc: Move source files to lib (where their headers were)
2023-08-30 17:22:38 +02:00
alloc.h
lib/attr.h, lib/, src/: Move attributes to new header file
2023-12-03 09:56:13 -06:00
attr.h
lib/attr.h: Add ATTR_STRING() attribute macro
2023-12-04 12:22:47 +01:00
audit_help.c
lib/attr.h, lib/, src/: Move attributes to new header file
2023-12-03 09:56:13 -06:00
basename.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
bit.c
lib, libmisc: Move source files to lib (where their headers were)
2023-08-30 17:22:38 +02:00
bit.h
lib: bit_ceil_wrapul(): stop recursion
2023-02-24 12:44:14 -06:00
btrfs.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
chkname.c
lib/chkname.c: Use tmp variable to avoid a -Wsign-compare warning
2023-12-04 11:45:09 +01:00
chkname.h
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
chowndir.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
chowntty.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
cleanup_group.c
lib/attr.h, lib/, src/: Move attributes to new header file
2023-12-03 09:56:13 -06:00
cleanup_user.c
lib/attr.h, lib/, src/: Move attributes to new header file
2023-12-03 09:56:13 -06:00
cleanup.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
commonio.c
lib: avoid format truncation
2023-12-14 07:40:40 -06:00
commonio.h
changing lock mechanism
2022-12-29 13:58:49 -06:00
console.c
lib/string/: Move string-related files to string/ subdir
2023-12-03 12:22:11 -06:00
copydir.c
Update close(2) checking
2023-12-14 07:40:40 -06:00
csrand.c
sizeof.h: Move sizeof()-related macros to their own header
2023-09-01 09:39:23 +02:00
date_to_str.c
lib/string/: Move string-related files to string/ subdir
2023-12-03 12:22:11 -06:00
defines.h
lib/defines.h: Remove ITI_AGING
2023-12-13 09:08:12 -06:00
encrypt.c
Merge pull request #451 from hallyn/2021-12-05/license
2022-01-02 18:38:42 -06:00
entry.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
env.c
lib/env.c: Replace strncpy(3) call by stpcpy(mempcpy(), "")
2023-12-03 22:24:29 -06:00
exitcodes.h
Update licensing info
2021-12-23 19:36:50 -06:00
faillog.h
Update licensing info
2021-12-23 19:36:50 -06:00
failure.c
lib: avoid double close on error
2023-12-14 07:40:40 -06:00
failure.h
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
fields.c
Overhaul valid_field()
2023-03-31 09:53:40 -05:00
find_new_gid.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
find_new_sub_gids.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
find_new_sub_uids.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
find_new_uid.c
Use CALLOC() instead of its pattern
2023-09-01 09:39:23 +02:00
fputsx.c
Update licensing info
2021-12-23 19:36:50 -06:00
freezero.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
freezero.h
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
get_gid.c
lib/, src/: Fix error handling after strto[u]l[l](3)
2023-12-04 12:21:55 +01:00
get_pid.c
lib/, src/: Align variable definitions
2023-12-13 10:06:34 -06:00
get_uid.c
lib/, src/: Fix error handling after strto[u]l[l](3)
2023-12-04 12:21:55 +01:00
getdate.h
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
getdate.y
lib/attr.h, lib/, src/: Move attributes to new header file
2023-12-03 09:56:13 -06:00
getdef.c
lib/string/: Move string-related files to string/ subdir
2023-12-03 12:22:11 -06:00
getdef.h
Improve the login.defs unknown item error message
2023-10-20 18:46:23 -05:00
getgr_nam_gid.c
lib/, src/: Fix error handling after strto[u]l[l](3)
2023-12-04 12:21:55 +01:00
getlong.c
lib/, src/: Fix error handling after strto[u]l[l](3)
2023-12-04 12:21:55 +01:00
getrange.c
lib/, src/: Fix error handling after strto[u]l[l](3)
2023-12-04 12:21:55 +01:00
gettime.c
lib/, src/: Fix error handling after strto[u]l[l](3)
2023-12-04 12:21:55 +01:00
getulong.c
lib/, src/: Fix error handling after strto[u]l[l](3)
2023-12-04 12:21:55 +01:00
groupio.c
lib/, src/: Use asprintf(3) instead of strlen(3)+malloc(3)+snprintf(3)
2023-10-20 21:05:33 +02:00
groupio.h
Update licensing info
2021-12-23 19:36:50 -06:00
groupmem.c
Use CALLOC() instead of its pattern
2023-09-01 09:39:23 +02:00
gshadow_.h
Update licensing info
2021-12-23 19:36:50 -06:00
gshadow.c
Simplify allocation APIs
2023-06-08 09:05:39 -05:00
hushed.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
idmapping.c
Update close(2) checking
2023-12-14 07:40:40 -06:00
idmapping.h
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
isexpired.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
limits.c
lib/, src/: Fix error handling after strto[u]l[l](3)
2023-12-04 12:21:55 +01:00
list.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
lockpw.c
Don't redefine errno(3)
2022-12-22 11:43:29 +01:00
log.c
lib: avoid double close on error
2023-12-14 07:40:40 -06:00
logind.c
lib/attr.h, lib/, src/: Move attributes to new header file
2023-12-03 09:56:13 -06:00
loginprompt.c
lib/loginprompt.c: Remove dead code
2023-12-04 11:45:09 +01:00
mail.c
lib/string/: Move string-related files to string/ subdir
2023-12-03 12:22:11 -06:00
Makefile.am
lib/string/: Move string-related files to string/ subdir
2023-12-03 12:22:11 -06:00
memzero.c
memzero.[ch]: Define memzero() and strzero() as inline functions
2023-09-01 09:39:23 +02:00
memzero.h
Use bzero(3) instead of its pattern
2023-09-01 09:39:23 +02:00
motd.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
must_be.h
must_be.h: Add must_be_array() macro
2023-09-01 09:39:23 +02:00
myname.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
nscd.c
Don't redefine errno(3)
2022-12-22 11:43:29 +01:00
nscd.h
* configure.in, lib/nscd.h, lib/nscd.c: Added --with-nscd flag to
2008-08-30 18:30:36 +00:00
nss.c
lib/, src/: Align variable definitions
2023-12-13 10:06:34 -06:00
obscure.c
lib/obscure.c: Mark parameter as [[maybe_unused]]
2023-12-04 11:45:09 +01:00
pam_defs.h
Declare constant data structure const
2023-01-25 12:31:17 +01:00
pam_pass_non_interactive.c
lib/attr.h, lib/, src/: Move attributes to new header file
2023-12-03 09:56:13 -06:00
pam_pass.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
port.c
Second verse, it gets worse; it gets no better than this
2023-05-31 09:29:49 -05:00
port.h
Update licensing info
2021-12-23 19:36:50 -06:00
prefix_flag.c
lib/, src/: Fix error handling after strto[u]l[l](3)
2023-12-04 12:21:55 +01:00
prototypes.h
lib/, src/: Say 'long' instead of 'long int'
2023-12-03 09:58:19 -06:00
pwauth.c
lib/pwauth.c: Replace getpass(3) by agetpass()
2023-09-04 08:57:18 -05:00
pwauth.h
Add header guards
2022-05-24 07:49:11 -05:00
pwd2spwd.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
pwd_init.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
pwdcheck.c
lib/attr.h, lib/, src/: Move attributes to new header file
2023-12-03 09:56:13 -06:00
pwio.c
lib: avoid dropping const qualifier during cast
2023-08-21 13:54:27 -05:00
pwio.h
Update licensing info
2021-12-23 19:36:50 -06:00
pwmem.c
memzero.h: Move memzero() and strzero() to their own header
2023-09-01 09:39:23 +02:00
readpassphrase.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
readpassphrase.h
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
remove_tree.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
rlogin.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
root_flag.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
run_part.c
lib/: Add missing #include <config.h>
2023-10-20 21:05:33 +02:00
run_part.h
Add header guards
2022-05-24 07:49:11 -05:00
salt.c
Use bzero(3) instead of its pattern
2023-09-01 09:39:23 +02:00
selinux.c
selinux: use type safe function pointer assignment
2023-03-20 08:47:52 +01:00
semanage.c
lib/attr.h, lib/, src/: Move attributes to new header file
2023-12-03 09:56:13 -06:00
setugid.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
setupenv.c
lib/string/: Move string-related files to string/ subdir
2023-12-03 12:22:11 -06:00
sgetgrent.c
Simplify allocation APIs
2023-06-08 09:05:39 -05:00
sgetpwent.c
Raise limit for passwd and shadow entry length
2022-10-14 10:41:40 +02:00
sgetspent.c
Don't redefine errno(3)
2022-12-22 11:43:29 +01:00
sgroupio.c
memzero.h: Move memzero() and strzero() to their own header
2023-09-01 09:39:23 +02:00
sgroupio.h
Update licensing info
2021-12-23 19:36:50 -06:00
shadow.c
Remove superfluous casts
2023-02-09 10:03:03 -06:00
shadowio.c
Remove superfluous casts
2023-02-09 10:03:03 -06:00
shadowio.h
Update licensing info
2021-12-23 19:36:50 -06:00
shadowlog_internal.h
Fix typos
2023-01-26 22:44:39 -06:00
shadowlog.c
lib: provide default values for shadow_progname/shadow_logfd
2021-12-27 16:28:23 +00:00
shadowlog.h
Drop obsolete prototype for log_dolog()
2022-08-06 11:27:56 -05:00
shadowmem.c
memzero.h: Move memzero() and strzero() to their own header
2023-09-01 09:39:23 +02:00
shell.c
lib/, src/: snprintf(3) already terminates strings with NUL
2023-12-13 12:34:30 +01:00
sizeof.h
sizeof.h: Add SIZEOF_ARRAY() macro
2023-09-01 09:39:23 +02:00
spawn.c
Merge pull request #451 from hallyn/2021-12-05/license
2022-01-02 18:38:42 -06:00
sssd.c
Simplify allocation APIs
2023-06-08 09:05:39 -05:00
sssd.h
Flush sssd caches in addition to nscd caches
2018-09-13 14:20:02 +02:00
strtoday.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
sub.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
subordinateio.c
lib/, src/: Say 'long' instead of 'long int'
2023-12-03 09:58:19 -06:00
subordinateio.h
fix newusers when nss provides subids
2021-05-23 08:16:16 -05:00
sulog.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
tcbfuncs.c
lib/tcbfuncs: operate on file descriptor rather than path
2023-08-21 11:29:17 +02:00
tcbfuncs.h
* lib/tcbfuncs.h: Re-indent.
2010-03-18 19:23:00 +00:00
ttytype.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
tz.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
ulimit.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
user_busy.c
lib/, src/: snprintf(3) already terminates strings with NUL
2023-12-13 12:34:30 +01:00
utmp.c
lib: avoid double close on error
2023-12-14 07:40:40 -06:00
valid.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
write_full.c
libmisc/write_full.c: Improve write_full()
2023-08-18 20:35:15 -05:00
xgetgrgid.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
xgetgrnam.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
xgetpwnam.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
xgetpwuid.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
xgetspnam.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
xgetXXbyYY.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
xprefix_getpwnam.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00
yesno.c
lib: Merge libmisc into libshadow
2023-08-31 08:55:26 +02:00