From 0b83088a1cb26291facf0ab2c0e2b4cac207f5bb Mon Sep 17 00:00:00 2001 From: Michael Jeanson Date: Fri, 27 Apr 2018 17:27:29 -0400 Subject: [PATCH] Backport: Port dynamic buffer to stable 2.9 Signed-off-by: Jonathan Rajotte --- configure.ac | 9 -- include/Makefile.am | 122 ++++++++------- include/{version.h.tmpl => version.h} | 2 +- src/common/Makefile.am | 2 + src/common/buffer-view.c | 71 +++++++++ src/common/buffer-view.h | 68 ++++++++ src/common/dynamic-buffer.c | 188 +++++++++++++++++++++++ src/common/dynamic-buffer.h | 97 ++++++++++++ src/common/sessiond-comm/sessiond-comm.h | 1 + src/common/utils.c | 67 ++++++++ src/common/utils.h | 1 + 11 files changed, 559 insertions(+), 69 deletions(-) rename include/{version.h.tmpl => version.h} (97%) create mode 100644 src/common/buffer-view.c create mode 100644 src/common/buffer-view.h create mode 100644 src/common/dynamic-buffer.c create mode 100644 src/common/dynamic-buffer.h diff --git a/configure.ac b/configure.ac index 21f51c33a..f035e24e4 100644 --- a/configure.ac +++ b/configure.ac @@ -522,15 +522,6 @@ AC_CHECK_LIB([pfm], [pfm_initialize], ]) AM_CONDITIONAL([LTTNG_TOOLS_BUILD_WITH_LIBPFM], [test "x$have_libpfm" = "xyes"]) -AC_ARG_ENABLE([git-version], - [AC_HELP_STRING([--disable-git-version], - [Do not use the git version for the build])], - [have_git_version=$enableval], [have_git_version=yes] -) - -AM_CONDITIONAL([LTTNG_TOOLS_BUILD_GIT_SOURCE], - [test "x${have_git_version}" = "xyes"]) - # For Python # SWIG version needed or newer: swig_version=2.0.0 diff --git a/include/Makefile.am b/include/Makefile.am index 3f07f2593..84c442292 100644 --- a/include/Makefile.am +++ b/include/Makefile.am @@ -1,68 +1,71 @@ -if LTTNG_TOOLS_BUILD_GIT_SOURCE -GIT_DESCRIBE_CMD = (cd $(top_srcdir); git describe) -else -GIT_DESCRIBE_CMD = /bin/true -endif - ## -## The version.h file must be verified and generated or updated if the -## git commit id (called git version here) changed since the last build -## of lttng-tools. +## This target generates an include file that contains the git version +## string of the current branch, it must be continuously updated when +## we build in the git repo and shipped in dist tarballs to reflect the +## status of the tree when it was generated. If the tree is clean and +## the current commit is tag a starting with "v", consider this a +## release version and set an empty git version. ## -version.h: - ## - ## We first create variables for the current git version and - ## the locations of the version.h and version.h.tmpl files. - ## - @echo $(ECHO_N) "Generating version.h... $(ECHO_C)" - @(version_h_tmpl="$(top_srcdir)/include/version.h.tmpl"; \ - if [ -f "$${version_h_tmpl}" ]; then \ - version_h="$(top_builddir)/include/version.h"; \ - ## - ## Check whether we are in a git repo. - ## - git_describe="`$(GIT_DESCRIBE_CMD) 2>/dev/null`"; \ - if [ $$? -eq 0 ]; then \ - git_version="$${git_describe}"; \ - else \ - git_version=""; \ - fi; \ - ## - ## If the version.h file doesn't exist or is not up to date, - ## We replace it by the version.h.tmpl file. - ## - if [ ! -e "$${version_h}" ] || \ - [ "$${version_h_tmpl}" -nt "$${version_h}" ]; then \ - cp "$${version_h_tmpl}" "$${version_h}"; \ +## Here is what the inline script does: +## +## First, delete any stale "version.i.tmp" file. +## +## If "bootstrap" and ".git" exists in the top source directory and the git +## executable is available, get the current git version string in the form: +## +## "latest_tag"(-"number_of_commits_on_top")(-g"latest_commit_hash")(-dirty) +## +## And store it in "version.i.tmp", if the current commit is tagged, the tag +## starts with "v" and the tree is clean, consider this a release version and +## overwrite the git version with an empty string in "version.i.tmp". +## +## If we don't have a "version.i.tmp" nor a "version.i", generate an empty +## string as a failover. +## +## If we don't have a "version.i" or we have both files and they are different, +## copy "version.i.tmp" over "version.i". This way the dependent targets are +## only rebuilt when the version string changes. +## +version_verbose = $(version_verbose_@AM_V@) +version_verbose_ = $(version_verbose_@AM_DEFAULT_V@) +version_verbose_0 = @echo " GEN " $@; + +version.i: + $(version_verbose)rm -f version.i.tmp; \ + if (test -r "$(top_srcdir)/bootstrap" && test -r "$(top_srcdir)/.git") && \ + test -x "`which git 2>&1;true`"; then \ + GIT_VERSION_STR="`cd "$(top_srcdir)" && git describe --tags --dirty`"; \ + GIT_CURRENT_TAG="`cd "$(top_srcdir)" && git describe --tags --exact-match --match="v[0-9]*" HEAD 2> /dev/null`"; \ + echo "#define GIT_VERSION \"$$GIT_VERSION_STR\"" > version.i.tmp; \ + if ! $(GREP) -- "-dirty" version.i.tmp > /dev/null && \ + test "x$$GIT_CURRENT_TAG" != "x"; then \ + echo "#define GIT_VERSION \"\"" > version.i.tmp; \ fi; \ - echo $(ECHO_N) "git version: \"$${git_version}\"$(ECHO_C)"; \ - ## - ## We verify that git_version isn't the same as the one - ## currently in the file (if there is one), as we don't - ## want to update the file if it is already up to date. - ## - version_match='^#define GIT_VERSION.*'; \ - old_version=$$($(GREP) "$${version_match}" "$${version_h}"); \ - new_version="#define GIT_VERSION \"$${git_version}\""; \ - if [ x"$${old_version}" != x"$${new_version}" ]; then \ - $(SED) -i -e "s'$${version_match}'$${new_version}'" "$${version_h}"; \ - else \ - echo $(ECHO_N) " (cached)$(ECHO_C)"; \ + fi; \ + if test ! -f version.i.tmp; then \ + if test ! -f version.i; then \ + echo '#define GIT_VERSION ""' > version.i; \ fi; \ - echo $(ECHO_N) "... $(ECHO_C)"; \ - fi) - @echo "$(ECHO_T)ok" + elif test ! -f version.i || \ + test x"`cat version.i.tmp`" != x"`cat version.i`"; then \ + mv version.i.tmp version.i; \ + fi; \ + rm -f version.i.tmp; \ + true ## -## version.h is defined as a .PHONY file even if it's a real file as -## we want our routine to be ran for each build. +## version.i is defined as a .PHONY target even if it's a real file, +## we want the target to be re-run on every make. ## -.PHONY: version.h +.PHONY: version.i -CLEANFILES = version.h +CLEANFILES = version.i.tmp -nodist_noinst_HEADERS = \ - version.h +## +## Only clean "version.i" on dist-clean, we need to keep it on regular +## clean when it's part of a dist tarball. +## +DISTCLEANFILES = version.i lttnginclude_HEADERS = \ lttng/health.h \ @@ -76,11 +79,12 @@ lttnginclude_HEADERS = \ lttng/lttng-error.h \ lttng/snapshot.h \ lttng/save.h \ - lttng/load.h \ - version.h.tmpl + lttng/load.h noinst_HEADERS = \ lttng/snapshot-internal.h \ lttng/health-internal.h \ lttng/save-internal.h \ - lttng/load-internal.h + lttng/load-internal.h \ + version.h \ + version.i diff --git a/include/version.h.tmpl b/include/version.h similarity index 97% rename from include/version.h.tmpl rename to include/version.h index 133a90ace..0f3f7c80c 100644 --- a/include/version.h.tmpl +++ b/include/version.h @@ -18,6 +18,6 @@ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#define GIT_VERSION "" +#include "version.i" #endif /* VERSION_H */ diff --git a/src/common/Makefile.am b/src/common/Makefile.am index 8619b5e25..7cbc11cb2 100644 --- a/src/common/Makefile.am +++ b/src/common/Makefile.am @@ -72,6 +72,8 @@ libcommon_la_SOURCES = error.h error.c utils.c utils.h runas.c runas.h \ pipe.c pipe.h readwrite.c readwrite.h \ mi-lttng.h mi-lttng.c \ daemonize.c daemonize.h \ + dynamic-buffer.h dynamic-buffer.c \ + buffer-view.h buffer-view.c \ unix.c unix.h \ filter.c filter.h context.c context.h diff --git a/src/common/buffer-view.c b/src/common/buffer-view.c new file mode 100644 index 000000000..4e84b0335 --- /dev/null +++ b/src/common/buffer-view.c @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2017 - Jérémie Galarneau + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License, version 2.1 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License + * for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include +#include +#include + +LTTNG_HIDDEN +struct lttng_buffer_view lttng_buffer_view_from_view( + const struct lttng_buffer_view *src, size_t offset, + ptrdiff_t len) +{ + struct lttng_buffer_view view = { .data = NULL, .size = 0 }; + + assert(src); + + if (offset > src->size) { + ERR("Attempt to create buffer view with invalid offset"); + goto end; + } + + if (len != -1 && len > (src->size - offset)) { + ERR("Attempt to create buffer view with invalid length"); + goto end; + } + + view.data = src->data + offset; + view.size = len == -1 ? (src->size - offset) : len; +end: + return view; +} + +LTTNG_HIDDEN +struct lttng_buffer_view lttng_buffer_view_from_dynamic_buffer( + const struct lttng_dynamic_buffer *src, size_t offset, + ptrdiff_t len) +{ + struct lttng_buffer_view view = { .data = NULL, .size = 0 }; + + assert(src); + + if (offset > src->size) { + ERR("Attempt to create buffer view with invalid offset"); + goto end; + } + + if (len != -1 && len > (src->size - offset)) { + ERR("Attempt to create buffer view with invalid length"); + goto end; + } + + view.data = src->data + offset; + view.size = len == -1 ? (src->size - offset) : len; +end: + return view; +} diff --git a/src/common/buffer-view.h b/src/common/buffer-view.h new file mode 100644 index 000000000..d2b18f663 --- /dev/null +++ b/src/common/buffer-view.h @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2017 - Jérémie Galarneau + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License, version 2.1 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License + * for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef LTTNG_BUFFER_VIEW_H +#define LTTNG_BUFFER_VIEW_H + +#include +#include +#include + +struct lttng_dynamic_buffer; + +struct lttng_buffer_view { + const char *data; + size_t size; +}; + +/** + * Return a buffer view referencing a subset of the memory referenced by another + * view. + * + * @src Source view to reference + * @offset Offset to apply to the source memory content + * @len Length of the memory contents to reference. Passing -1 will + * cause the view to reference the whole view from the offset + * provided. + * + * Note that a buffer view never assumes the ownership of the memory it + * references. + */ +LTTNG_HIDDEN +struct lttng_buffer_view lttng_buffer_view_from_view( + const struct lttng_buffer_view *src, size_t offset, + ptrdiff_t len); + +/** + * Return a buffer view referencing a subset of the memory referenced by a + * dynamic buffer. + * + * @src Source dynamic buffer to reference + * @offset Offset to apply to the source memory content + * @len Length of the memory contents to reference. Passing -1 will + * cause the view to reference the whole dynamic buffer from the + * offset provided. + * + * Note that a buffer view never assumes the ownership of the memory it + * references. + */ +LTTNG_HIDDEN +struct lttng_buffer_view lttng_buffer_view_from_dynamic_buffer( + const struct lttng_dynamic_buffer *src, size_t offset, + ptrdiff_t len); + +#endif /* LTTNG_BUFFER_VIEW_H */ diff --git a/src/common/dynamic-buffer.c b/src/common/dynamic-buffer.c new file mode 100644 index 000000000..fd39f813b --- /dev/null +++ b/src/common/dynamic-buffer.c @@ -0,0 +1,188 @@ +/* + * Copyright (C) 2017 - Jérémie Galarneau + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License, version 2.1 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License + * for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include +#include + +/* + * Round to (upper) power of two, val is returned if it already is a power of + * two. + */ +static +size_t round_to_power_of_2(size_t val) +{ + int order; + size_t rounded; + + order = utils_get_count_order_u64(val); + assert(order >= 0); + rounded = (1ULL << order); + assert(rounded >= val); + + return rounded; +} + +LTTNG_HIDDEN +void lttng_dynamic_buffer_init(struct lttng_dynamic_buffer *buffer) +{ + assert(buffer); + memset(buffer, 0, sizeof(*buffer)); +} + +LTTNG_HIDDEN +int lttng_dynamic_buffer_append(struct lttng_dynamic_buffer *buffer, + const void *buf, size_t len) +{ + int ret = 0; + + if (!buffer || (!buf && len)) { + ret = -1; + goto end; + } + + if (len == 0) { + /* Not an error, no-op. */ + goto end; + } + + assert(buffer->_capacity >= buffer->size); + if (buffer->_capacity < (len + buffer->size)) { + ret = lttng_dynamic_buffer_set_capacity(buffer, + buffer->_capacity + + (len - (buffer->_capacity - buffer->size))); + if (ret) { + goto end; + } + } + + memcpy(buffer->data + buffer->size, buf, len); + buffer->size += len; +end: + return ret; +} + +LTTNG_HIDDEN +int lttng_dynamic_buffer_append_buffer(struct lttng_dynamic_buffer *dst_buffer, + struct lttng_dynamic_buffer *src_buffer) +{ + int ret; + + if (!dst_buffer || !src_buffer) { + ret = -1; + goto end; + } + + ret = lttng_dynamic_buffer_append(dst_buffer, src_buffer->data, + src_buffer->size); +end: + return ret; +} + +LTTNG_HIDDEN +int lttng_dynamic_buffer_set_size(struct lttng_dynamic_buffer *buffer, + size_t new_size) +{ + int ret = 0; + + if (!buffer) { + goto end; + } + + if (new_size == buffer->size) { + goto end; + } + + if (new_size > buffer->_capacity) { + size_t original_size = buffer->size; + size_t original_capacity = buffer->_capacity; + + ret = lttng_dynamic_buffer_set_capacity(buffer, new_size); + if (ret) { + goto end; + } + + /* + * Zero-initialize the space that was left in the buffer at the + * before we increased its capacity (original capacity - original size). + * The newly acquired capacity (new capacity - original capacity) + * is zeroed by lttng_dynamic_buffer_set_capacity(). + */ + memset(buffer->data + original_size, 0, + original_capacity - original_size); + } else if (new_size > buffer->size) { + memset(buffer->data + buffer->size, 0, new_size - buffer->size); + } else { + /* + * Shrinking size. There is no need to zero-out the newly + * released memory as it will either be: + * - overwritten by lttng_dynamic_buffer_append, + * - expanded later, which will zero-out the memory + * + * Users of external APIs are encouraged to set the buffer's + * size _before_ making such calls. + */ + } + buffer->size = new_size; +end: + return ret; +} + +LTTNG_HIDDEN +int lttng_dynamic_buffer_set_capacity(struct lttng_dynamic_buffer *buffer, + size_t demanded_capacity) +{ + int ret = 0; + void *new_buf; + size_t new_capacity = round_to_power_of_2(demanded_capacity); + + if (!buffer || demanded_capacity < buffer->size) { + /* + * Shrinking a buffer's size by changing its capacity is + * unsupported. + */ + ret = -1; + goto end; + } + + if (new_capacity == buffer->_capacity) { + goto end; + } + + /* Memory is initialized by the size increases. */ + new_buf = realloc(buffer->data, new_capacity); + if (!new_buf) { + ret = -1; + goto end; + } + buffer->data = new_buf; + buffer->_capacity = new_capacity; +end: + return ret; +} + +/* Release any memory used by the dynamic buffer. */ +LTTNG_HIDDEN +void lttng_dynamic_buffer_reset(struct lttng_dynamic_buffer *buffer) +{ + if (!buffer) { + return; + } + buffer->size = 0; + buffer->_capacity = 0; + free(buffer->data); +} diff --git a/src/common/dynamic-buffer.h b/src/common/dynamic-buffer.h new file mode 100644 index 000000000..d42a6a61d --- /dev/null +++ b/src/common/dynamic-buffer.h @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2017 - Jérémie Galarneau + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License, version 2.1 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License + * for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef LTTNG_DYNAMIC_BUFFER_H +#define LTTNG_DYNAMIC_BUFFER_H + +#include +#include +#include + +struct lttng_dynamic_buffer { + char *data; + /* size is the buffer's currently used capacity. */ + size_t size; + /* + * capacity shall not be accessed by users directly, it is meant for + * internal use only. + */ + size_t _capacity; +}; + +/* + * Initialize a dynamic buffer. This performs no allocation and is meant + * to be used instead of memset or explicit initialization of the buffer. + */ +LTTNG_HIDDEN +void lttng_dynamic_buffer_init(struct lttng_dynamic_buffer *buffer); + +/* + * Append the content of a raw memory buffer to the end of a dynamic buffer + * (after its current "size"). The dynamic buffer's size is increased by + * "len", and its capacity is adjusted automatically. + */ +LTTNG_HIDDEN +int lttng_dynamic_buffer_append(struct lttng_dynamic_buffer *buffer, + const void *buf, size_t len); + +/* + * Performs the same action as lttng_dynamic_buffer_append(), but using another + * dynamic buffer as the source buffer. The source buffer's size is used in lieu + * of "len". + */ +LTTNG_HIDDEN +int lttng_dynamic_buffer_append_buffer(struct lttng_dynamic_buffer *dst_buffer, + struct lttng_dynamic_buffer *src_buffer); + +/* + * Set the buffer's size to new_size. The capacity of the buffer will + * be expanded (if necessary) to accomodate new_size. Areas acquired by + * a size increase will be zeroed. + * + * Be careful to expand the buffer's size _before_ calling out external + * APIs (e.g. read(3)) which may populate the buffer as setting the size + * after will zero-out the result of the operation. + * + * Shrinking a buffer does not zero the old content. If the buffer may contain + * sensititve information, it must be cleared manually _before_ changing the + * size. + * + * NOTE: It is striclty _invalid_ to access memory after _size_, regardless + * of prior calls to set_capacity(). + */ +LTTNG_HIDDEN +int lttng_dynamic_buffer_set_size(struct lttng_dynamic_buffer *buffer, + size_t new_size); + +/* + * Set the buffer's capacity to accomodate the new_capacity, allocating memory + * as necessary. The buffer's content is preserved. Setting a buffer's capacity + * is meant as a _hint_ to the underlying buffer and is only optimization; no + * guarantee is offered that subsequent calls to append or set_size will succeed. + * + * If the current size > new_capacity, the operation will fail. + */ +LTTNG_HIDDEN +int lttng_dynamic_buffer_set_capacity(struct lttng_dynamic_buffer *buffer, + size_t new_capacity); + +/* Release any memory used by the dynamic buffer. */ +LTTNG_HIDDEN +void lttng_dynamic_buffer_reset(struct lttng_dynamic_buffer *buffer); + +#endif /* LTTNG_DYNAMIC_BUFFER_H */ diff --git a/src/common/sessiond-comm/sessiond-comm.h b/src/common/sessiond-comm/sessiond-comm.h index 0c2667031..0fba38642 100644 --- a/src/common/sessiond-comm/sessiond-comm.h +++ b/src/common/sessiond-comm/sessiond-comm.h @@ -37,6 +37,7 @@ #include #include #include +#include #include "inet.h" #include "inet6.h" diff --git a/src/common/utils.c b/src/common/utils.c index 24c3b8ca1..25d510854 100644 --- a/src/common/utils.c +++ b/src/common/utils.c @@ -1017,6 +1017,59 @@ static inline unsigned int fls_u32(uint32_t x) #define HAS_FLS_U32 #endif +#if defined(__x86_64) +static inline +unsigned int fls_u64(uint64_t x) +{ + long r; + + asm("bsrq %1,%0\n\t" + "jnz 1f\n\t" + "movq $-1,%0\n\t" + "1:\n\t" + : "=r" (r) : "rm" (x)); + return r + 1; +} +#define HAS_FLS_U64 +#endif + +#ifndef HAS_FLS_U64 +static __attribute__((unused)) +unsigned int fls_u64(uint64_t x) +{ + unsigned int r = 64; + + if (!x) + return 0; + + if (!(x & 0xFFFFFFFF00000000ULL)) { + x <<= 32; + r -= 32; + } + if (!(x & 0xFFFF000000000000ULL)) { + x <<= 16; + r -= 16; + } + if (!(x & 0xFF00000000000000ULL)) { + x <<= 8; + r -= 8; + } + if (!(x & 0xF000000000000000ULL)) { + x <<= 4; + r -= 4; + } + if (!(x & 0xC000000000000000ULL)) { + x <<= 2; + r -= 2; + } + if (!(x & 0x8000000000000000ULL)) { + x <<= 1; + r -= 1; + } + return r; +} +#endif + #ifndef HAS_FLS_U32 static __attribute__((unused)) unsigned int fls_u32(uint32_t x) { @@ -1063,6 +1116,20 @@ int utils_get_count_order_u32(uint32_t x) return fls_u32(x - 1); } +/* + * Return the minimum order for which x <= (1UL << order). + * Return -1 if x is 0. + */ +LTTNG_HIDDEN +int utils_get_count_order_u64(uint64_t x) +{ + if (!x) { + return -1; + } + + return fls_u64(x - 1); +} + /** * Obtain the value of LTTNG_HOME environment variable, if exists. * Otherwise returns the value of HOME. diff --git a/src/common/utils.h b/src/common/utils.h index 7285f5c30..0daf5b98d 100644 --- a/src/common/utils.h +++ b/src/common/utils.h @@ -48,6 +48,7 @@ int utils_rotate_stream_file(char *path_name, char *file_name, uint64_t size, int *stream_fd); int utils_parse_size_suffix(char const * const str, uint64_t * const size); int utils_get_count_order_u32(uint32_t x); +int utils_get_count_order_u64(uint64_t x); char *utils_get_home_dir(void); char *utils_get_user_home_dir(uid_t uid); char *utils_get_kmod_probes_list(void); -- 2.34.1