UTIL: exit() the forked process if exec()-ing a child process fails When exec() fails, we should not attempt to continue, but just kill the forked process. The patch adds this logic to the exec_child() and exec_child_ex() functions to avoid code duplication Resolves: https://fedorahosted.org/sssd/ticket/3016 Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

UTIL: allow to skip default options for child processes Currently the SSSD default options like e.g. --debug-level are added unconditionally to the command line options of a child process when started with the child helper functions. If a binary from a different source should be started as a child by SSSD those options might not be known or used differently. This patch adds an option to exec_child_ex() which allows to skip the default options and only add specific options. Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

Fix warning: equality comparison with extraneous parentheses Example of warning: src/sss_client/libwbclient/wbc_pwd_sssd.c:246:23: error: equality comparison with extraneous parentheses [-Werror,-Wparentheses-equality] if (((wbc_status) == WBC_ERR_SUCCESS)) { ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ src/sss_client/libwbclient/wbc_pwd_sssd.c:246:23: note: remove extraneous parentheses around the comparison to silence this warning if (((wbc_status) == WBC_ERR_SUCCESS)) { ~ ^ ~ src/sss_client/libwbclient/wbc_pwd_sssd.c:246:23: note: use '=' to turn this equality comparison into an assignment if (((wbc_status) == WBC_ERR_SUCCESS)) { ^~ = The reason is definition of some macros which were used in if conditions. Reviewed-by: Michal Židek <mzidek@redhat.com>

UTIL: Unify the fd_nonblocking implementation The responder and child_common modules each had their own implementation. Unify it instead and add a unit test. Reviewed-by: Pavel Březina <pbrezina@redhat.com>

UTIL: Remove child_cleanup Not used anymore after previous patch. Reviewed-by: Pavel Březina <pbrezina@redhat.com>

UTIL: Make two child_common.c functions static Two functions were only used internally, makes no sense to keep them in the child_common module API. Reviewed-by: Pavel Březina <pbrezina@redhat.com>

UTIL: Allow dup-ing child pipe to a different FD Related to: https://fedorahosted.org/sssd/ticket/2544 Adds a new function exec_child_ex and moves setting the extra_argv[] to exec_child_ex() along with specifying the input and output fds. Reviewed-by: Sumit Bose <sbose@redhat.com>

sss_atomic_write_s() return value is signed Reviewed-by: Sumit Bose <sbose@redhat.com>

Add extra_args to exec_child() Related: https://fedorahosted.org/sssd/ticket/2503 Currently all child processes use the same arguments, the construction of argv[] is even hardcoded in exec_child(). Add an extra_args[] array that extends the common set of argvs so that we can have child-specific arguments. Also adds a unit test. Reviewed-by: Sumit Bose <sbose@redhat.com>

UTIL: Remove more code duplication setting up child processes All our child processes duplicated the same code that set up the debugging all around. Instead of adding yet another copy for the selinux_child, add a common utility function. Reviewed-by: Michal Židek <mzidek@redhat.com>

UTIL: Remove code duplication of struct io We had struct io and the associated destructor copied twice in the code already and need it again in the SELinux provider. Instead of adding another copy, move the code to a shared subtree under util/ Reviewed-by: Michal Židek <mzidek@redhat.com>

SSSD: Send debug to stderr when running on foreground https://fedorahosted.org/sssd/ticket/2348 When SSSD is running in interactive mode, we should print DEBUG messages directly to stderr, not journal. Reviewed-by: Michal Židek <mzidek@redhat.com>

Update DEBUG* invocations to use new levels Use a script to update DEBUG* macro invocations, which use literal numbers for levels, to use bitmask macros instead: grep -rl --include '*.[hc]' DEBUG . | while read f; do mv "$f"{,.orig} perl -e 'use strict; use File::Slurp; my @map=qw" SSSDBG_FATAL_FAILURE SSSDBG_CRIT_FAILURE SSSDBG_OP_FAILURE SSSDBG_MINOR_FAILURE SSSDBG_CONF_SETTINGS SSSDBG_FUNC_DATA SSSDBG_TRACE_FUNC SSSDBG_TRACE_LIBS SSSDBG_TRACE_INTERNAL SSSDBG_TRACE_ALL "; my $text=read_file(\*STDIN); my $repl; $text=~s/ ^ ( .* \b (DEBUG|DEBUG_PAM_DATA|DEBUG_GR_MEM) \s* \(\s* )( [0-9] )( \s*, ) ( \s* ) ( .* ) $ / $repl = $1.$map[$3].$4.$5.$6, length($repl) <= 80 ? $repl : $1.$map[$3].$4."\n".(" " x length($1)).$6 /xmge; print $text; ' < "$f.orig" > "$f" rm "$f.orig" done Reviewed-by: Jakub Hrozek <jhrozek@redhat.com> Reviewed-by: Stephen Gallagher <sgallagh@redhat.com> Reviewed-by: Simo Sorce <simo@redhat.com>

Make DEBUG macro invocations variadic Use a script to update DEBUG macro invocations to use it as a variadic macro, supplying format string and its arguments directly, instead of wrapping them in parens. This script was used to update the code: grep -rwl --include '*.[hc]' DEBUG . | while read f; do mv "$f"{,.orig} perl -e \ 'use strict; use File::Slurp; my $text=read_file(\*STDIN); $text=~s#(\bDEBUG\s*\([^(]+)\((.*?)\)\s*\)\s*;#$1$2);#gs; print $text;' < "$f.orig" > "$f" rm "$f.orig" done Reviewed-by: Jakub Hrozek <jhrozek@redhat.com> Reviewed-by: Stephen Gallagher <sgallagh@redhat.com> Reviewed-by: Simo Sorce <simo@redhat.com>

Fix formating of variables with type: size_t

Fix formating of variables with type: ssize_t

Use brackets around macros. warnings reported by cppcheck.

SIGCHLD handler: do not call callback when pvt data where freed https://fedorahosted.org/sssd/ticket/1992

Do not keep growing event context

execv, excvp and exec_child never return EOK * So don't need to handle that case

Convert read and write operations to sss_atomic_read https://fedorahosted.org/sssd/ticket/1209

Move child_common routines to util