From d4b53d090e09f8929df0367e446569dc32cf269d Mon Sep 17 00:00:00 2001 From: Sergio Durigan Junior Date: Wed, 12 Sep 2018 13:16:02 -0400 Subject: [PATCH] Move 'is_regular_file' from common-utils.c to filestuff.c There is no reason for 'is_regular_file' to be in common-utils.c; it belongs to 'filestuff.c'. This commit moves the function definition and its prototype to the appropriate files. The motivation behind this move is a failure that happens on certain cross-compilation environments when compiling the IPA library, due to the way gnulib probes the need for a 'stat' call replacement. Because configure checks when cross-compiling are more limited, gnulib decides that it needs to substitute the 'stat' calls its own 'rpl_stat'; however, the IPA library doesn't link with gnulib, which leads to an error when compiling 'common-utils.c': ... /opt/x86-core2--musl--bleeding-edge-2018.09-1/bin/i686-buildroot-linux-musl-g++ -shared -fPIC -Wl,--soname=libinproctrace.so -Wl,--no-undefined -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -I. -I. -I./../common -I./../regformats -I./.. -I./../../include -I./../gnulib/import -Ibuild-gnulib-gdbserver/import -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Wall -Wpointer-arith -Wno-unused -Wunused-value -Wunused-function -Wno-switch -Wno-char-subscripts -Wempty-body -Wunused-but-set-parameter -Wunused-but-set-variable -Wno-sign-compare -Wno-narrowing -Wno-error=maybe-uninitialized -DGDBSERVER \ -Wl,--dynamic-list=./proc-service.list -o libinproctrace.so ax-ipa.o common-utils-ipa.o errors-ipa.o format-ipa.o print-utils-ipa.o regcache-ipa.o remote-utils-ipa.o rsp-low-ipa.o tdesc-ipa.o tracepoint-ipa.o utils-ipa.o vec-ipa.o linux-i386-ipa.o linux-x86-tdesc-ipa.o arch/i386-ipa.o -ldl -pthread /opt/x86-core2--musl--bleeding-edge-2018.09-1/lib/gcc/i686-buildroot-linux-musl/8.2.0/../../../../i686-buildroot-linux-musl/bin/ld: common-utils-ipa.o: in function `is_regular_file(char const*, int*)': common-utils.c:(.text+0x695): undefined reference to `rpl_stat' collect2: error: ld returned 1 exit status Makefile:413: recipe for target 'libinproctrace.so' failed make[1]: *** [libinproctrace.so] Error 1 ... More details can also be found at: https://sourceware.org/ml/gdb-patches/2018-09/msg00304.html The most simple fix for this problem is to move 'is_regular_file' to 'filestuff.c', which is not used by IPA. This ends up making the files more logically organized as well, since 'is_regular_file' is a file operation. No regressions found. gdb/ChangeLog: 2018-09-12 Sergio Durigan Junior * common/common-utils.c: Don't include ''. (is_regular_file): Move to... * common/filestuff.c (is_regular_file): ... here. * common/common-utils.h (is_regular_file): Move to... * common/filestuff.h (is_regular_file): ... here. (cherry picked from commit 3c025cfe5efc44eb4dfb03b53dca28e75096dd1e) [Romain: backport to gdb 8.2 and remove ChangeLog enty] Signed-off-by: Romain Naour --- gdb/common/common-utils.c | 32 -------------------------------- gdb/common/common-utils.h | 5 ----- gdb/common/filestuff.c | 31 +++++++++++++++++++++++++++++++ gdb/common/filestuff.h | 5 +++++ 4 files changed, 36 insertions(+), 37 deletions(-) diff --git a/gdb/common/common-utils.c b/gdb/common/common-utils.c index 8d839d10fa8..24b3936f3dc 100644 --- a/gdb/common/common-utils.c +++ b/gdb/common/common-utils.c @@ -20,7 +20,6 @@ #include "common-defs.h" #include "common-utils.h" #include "host-defs.h" -#include #include /* The xmalloc() (libiberty.h) family of memory management routines. @@ -412,37 +411,6 @@ stringify_argv (const std::vector &args) /* See common/common-utils.h. */ -bool -is_regular_file (const char *name, int *errno_ptr) -{ - struct stat st; - const int status = stat (name, &st); - - /* Stat should never fail except when the file does not exist. - If stat fails, analyze the source of error and return true - unless the file does not exist, to avoid returning false results - on obscure systems where stat does not work as expected. */ - - if (status != 0) - { - if (errno != ENOENT) - return true; - *errno_ptr = ENOENT; - return false; - } - - if (S_ISREG (st.st_mode)) - return true; - - if (S_ISDIR (st.st_mode)) - *errno_ptr = EISDIR; - else - *errno_ptr = EINVAL; - return false; -} - -/* See common/common-utils.h. */ - ULONGEST align_up (ULONGEST v, int n) { diff --git a/gdb/common/common-utils.h b/gdb/common/common-utils.h index 7bc6e90f05c..a961514fd66 100644 --- a/gdb/common/common-utils.h +++ b/gdb/common/common-utils.h @@ -146,11 +146,6 @@ in_inclusive_range (T value, T low, T high) return value >= low && value <= high; } -/* Return true if the file NAME exists and is a regular file. - If the result is false then *ERRNO_PTR is set to a useful value assuming - we're expecting a regular file. */ -extern bool is_regular_file (const char *name, int *errno_ptr); - /* Ensure that V is aligned to an N byte boundary (B's assumed to be a power of 2). Round up/down when necessary. Examples of correct use include: diff --git a/gdb/common/filestuff.c b/gdb/common/filestuff.c index f5a754ffa66..fa10165a7ca 100644 --- a/gdb/common/filestuff.c +++ b/gdb/common/filestuff.c @@ -417,3 +417,34 @@ make_cleanup_close (int fd) *saved_fd = fd; return make_cleanup_dtor (do_close_cleanup, saved_fd, xfree); } + +/* See common/filestuff.h. */ + +bool +is_regular_file (const char *name, int *errno_ptr) +{ + struct stat st; + const int status = stat (name, &st); + + /* Stat should never fail except when the file does not exist. + If stat fails, analyze the source of error and return true + unless the file does not exist, to avoid returning false results + on obscure systems where stat does not work as expected. */ + + if (status != 0) + { + if (errno != ENOENT) + return true; + *errno_ptr = ENOENT; + return false; + } + + if (S_ISREG (st.st_mode)) + return true; + + if (S_ISDIR (st.st_mode)) + *errno_ptr = EISDIR; + else + *errno_ptr = EINVAL; + return false; +} diff --git a/gdb/common/filestuff.h b/gdb/common/filestuff.h index 0e46eb5da0b..21b4edd6bf6 100644 --- a/gdb/common/filestuff.h +++ b/gdb/common/filestuff.h @@ -98,4 +98,9 @@ struct gdb_dir_deleter typedef std::unique_ptr gdb_dir_up; +/* Return true if the file NAME exists and is a regular file. + If the result is false then *ERRNO_PTR is set to a useful value assuming + we're expecting a regular file. */ +extern bool is_regular_file (const char *name, int *errno_ptr); + #endif /* FILESTUFF_H */ -- 2.14.4