diff options
Diffstat (limited to 'meta/recipes-core/systemd/systemd/0006-journal-Use-posix-fallocate-only-if-available.patch')
-rw-r--r-- | meta/recipes-core/systemd/systemd/0006-journal-Use-posix-fallocate-only-if-available.patch | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/meta/recipes-core/systemd/systemd/0006-journal-Use-posix-fallocate-only-if-available.patch b/meta/recipes-core/systemd/systemd/0006-journal-Use-posix-fallocate-only-if-available.patch new file mode 100644 index 0000000000..631dd77465 --- /dev/null +++ b/meta/recipes-core/systemd/systemd/0006-journal-Use-posix-fallocate-only-if-available.patch @@ -0,0 +1,96 @@ +From 34a61b6c9eed3fad360066fb63132ebc7e0aaaa6 Mon Sep 17 00:00:00 2001 +From: Khem Raj <raj.khem@gmail.com> +Date: Fri, 20 Feb 2015 05:12:48 +0000 +Subject: [PATCH 06/11] journal: Use posix fallocate only if available + +Some architecture ports in uclibc did not support it in past + +Upstream-Status: Denied [no desire for uclibc support] + +Signed-off-by: Khem Raj <raj.khem@gmail.com> +Signed-off-by: Chen Qi <Qi.Chen@windriver.com> +--- + src/journal/journal-file.c | 16 +++++++++++++++- + src/journal/journald-kmsg.c | 15 ++++++++++++++- + 2 files changed, 29 insertions(+), 2 deletions(-) + +diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c +index 2845e05..9431171 100644 +--- a/src/journal/journal-file.c ++++ b/src/journal/journal-file.c +@@ -36,6 +36,8 @@ + #include "compress.h" + #include "fsprg.h" + ++#include "config.h" ++ + #define DEFAULT_DATA_HASH_TABLE_SIZE (2047ULL*sizeof(HashItem)) + #define DEFAULT_FIELD_HASH_TABLE_SIZE (333ULL*sizeof(HashItem)) + +@@ -354,7 +356,7 @@ static int journal_file_fstat(JournalFile *f) { + + static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size) { + uint64_t old_size, new_size; +- int r; ++ int r = 0; + + assert(f); + +@@ -418,9 +420,21 @@ static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size) + /* Note that the glibc fallocate() fallback is very + inefficient, hence we try to minimize the allocation area + as we can. */ ++#ifdef HAVE_POSIX_FALLOCATE + r = posix_fallocate(f->fd, old_size, new_size - old_size); + if (r != 0) + return -r; ++#else ++ /* Write something every 512 bytes to make sure the block is allocated */ ++ uint64_t len = new_size - old_size; ++ uint64_t offset = old_size; ++ for (offset += (len-1) % 512; len > 0; offset += 512) { ++ len -= 512; ++ if (pwrite(f->fd, "", 1, offset) != 1) ++ return -errno; ++ } ++ ++#endif /* HAVE_POSIX_FALLOCATE */ + + f->header->arena_size = htole64(new_size - le64toh(f->header->header_size)); + +diff --git a/src/journal/journald-kmsg.c b/src/journal/journald-kmsg.c +index c4216c4..a998ed5 100644 +--- a/src/journal/journald-kmsg.c ++++ b/src/journal/journald-kmsg.c +@@ -436,6 +436,7 @@ fail: + int server_open_kernel_seqnum(Server *s) { + _cleanup_close_ int fd; + uint64_t *p; ++ int r = 0; + + assert(s); + +@@ -449,7 +450,19 @@ int server_open_kernel_seqnum(Server *s) { + return 0; + } + +- if (posix_fallocate(fd, 0, sizeof(uint64_t)) < 0) { ++#ifdef HAVE_POSIX_FALLOCATE ++ r = posix_fallocate(fd, 0, sizeof(uint64_t)); ++#else ++ /* Use good old method to write zeros into the journal file ++ perhaps very inefficient yet working. */ ++ char *buf = alloca(sizeof(uint64_t)); ++ off_t oldpos = lseek(fd, 0, SEEK_CUR); ++ bzero(buf, sizeof(uint64_t)); ++ lseek(fd, 0, SEEK_SET); ++ r = write(fd, buf, sizeof(uint64_t)); ++ lseek(fd, oldpos, SEEK_SET); ++#endif /* HAVE_POSIX_FALLOCATE */ ++ if (r < 0) { + log_error_errno(errno, "Failed to allocate sequential number file, ignoring: %m"); + return 0; + } +-- +2.1.4 + |