diff options
author | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2017-10-03 10:41:51 +0200 |
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committer | Sven Eden <yamakuzure@gmx.net> | 2017-11-23 08:11:42 +0100 |
commit | 3344b839df8fe2dd2b4a4f470225e4c407cf2faa (patch) | |
tree | a64c86cfe6adc5718143f5604fef893cfd94a865 /src/basic/fileio.c | |
parent | 7d729de3a70bc7a7fef69f5cea03fcbf835e118a (diff) |
build-sys: use #if Y instead of #ifdef Y everywhere
The advantage is that is the name is mispellt, cpp will warn us.
$ git grep -Ee "conf.set\('(HAVE|ENABLE)_" -l|xargs sed -r -i "s/conf.set\('(HAVE|ENABLE)_/conf.set10('\1_/"
$ git grep -Ee '#ifn?def (HAVE|ENABLE)' -l|xargs sed -r -i 's/#ifdef (HAVE|ENABLE)/#if \1/; s/#ifndef (HAVE|ENABLE)/#if ! \1/;'
$ git grep -Ee 'if.*defined\(HAVE' -l|xargs sed -i -r 's/defined\((HAVE_[A-Z0-9_]*)\)/\1/g'
$ git grep -Ee 'if.*defined\(ENABLE' -l|xargs sed -i -r 's/defined\((ENABLE_[A-Z0-9_]*)\)/\1/g'
+ manual changes to meson.build
squash! build-sys: use #if Y instead of #ifdef Y everywhere
v2:
- fix incorrect setting of HAVE_LIBIDN2
Diffstat (limited to 'src/basic/fileio.c')
-rw-r--r-- | src/basic/fileio.c | 66 |
1 files changed, 39 insertions, 27 deletions
diff --git a/src/basic/fileio.c b/src/basic/fileio.c index 3990d4dce..46b8b4a69 100644 --- a/src/basic/fileio.c +++ b/src/basic/fileio.c @@ -53,13 +53,17 @@ #define READ_FULL_BYTES_MAX (4U*1024U*1024U) -int write_string_stream_ts(FILE *f, const char *line, bool enforce_newline, struct timespec *ts) { +int write_string_stream_ts( + FILE *f, + const char *line, + WriteStringFileFlags flags, + struct timespec *ts) { assert(f); assert(line); fputs(line, f); - if (enforce_newline && !endswith(line, "\n")) + if (!(flags & WRITE_STRING_FILE_AVOID_NEWLINE) && !endswith(line, "\n")) fputc('\n', f); if (ts) { @@ -69,10 +73,18 @@ int write_string_stream_ts(FILE *f, const char *line, bool enforce_newline, stru return -errno; } - return fflush_and_check(f); + if (flags & WRITE_STRING_FILE_SYNC) + return fflush_sync_and_check(f); + else + return fflush_and_check(f); } -static int write_string_file_atomic(const char *fn, const char *line, bool enforce_newline, bool do_fsync) { +static int write_string_file_atomic( + const char *fn, + const char *line, + WriteStringFileFlags flags, + struct timespec *ts) { + _cleanup_fclose_ FILE *f = NULL; _cleanup_free_ char *p = NULL; int r; @@ -86,22 +98,28 @@ static int write_string_file_atomic(const char *fn, const char *line, bool enfor (void) fchmod_umask(fileno(f), 0644); - r = write_string_stream(f, line, enforce_newline); - if (r >= 0 && do_fsync) - r = fflush_sync_and_check(f); + r = write_string_stream_ts(f, line, flags, ts); + if (r < 0) + goto fail; - if (r >= 0) { - if (rename(p, fn) < 0) - r = -errno; + if (rename(p, fn) < 0) { + r = -errno; + goto fail; } - if (r < 0) - (void) unlink(p); + return 0; +fail: + (void) unlink(p); return r; } -int write_string_file_ts(const char *fn, const char *line, WriteStringFileFlags flags, struct timespec *ts) { +int write_string_file_ts( + const char *fn, + const char *line, + WriteStringFileFlags flags, + struct timespec *ts) { + _cleanup_fclose_ FILE *f = NULL; int q, r; @@ -114,8 +132,7 @@ int write_string_file_ts(const char *fn, const char *line, WriteStringFileFlags if (flags & WRITE_STRING_FILE_ATOMIC) { assert(flags & WRITE_STRING_FILE_CREATE); - r = write_string_file_atomic(fn, line, !(flags & WRITE_STRING_FILE_AVOID_NEWLINE), - flags & WRITE_STRING_FILE_SYNC); + r = write_string_file_atomic(fn, line, flags, ts); if (r < 0) goto fail; @@ -148,16 +165,10 @@ int write_string_file_ts(const char *fn, const char *line, WriteStringFileFlags } } - r = write_string_stream_ts(f, line, !(flags & WRITE_STRING_FILE_AVOID_NEWLINE), ts); + r = write_string_stream_ts(f, line, flags, ts); if (r < 0) goto fail; - if (flags & WRITE_STRING_FILE_SYNC) { - r = fflush_sync_and_check(f); - if (r < 0) - return r; - } - return 0; fail: @@ -247,11 +258,11 @@ int read_full_stream(FILE *f, char **contents, size_t *size) { if (st.st_size > READ_FULL_BYTES_MAX) return -E2BIG; - /* Start with the right file size, but be prepared for - * files from /proc which generally report a file size - * of 0 */ + /* Start with the right file size, but be prepared for files from /proc which generally report a file + * size of 0. Note that we increase the size to read here by one, so that the first read attempt + * already makes us notice the EOF. */ if (st.st_size > 0) - n = st.st_size; + n = st.st_size + 1; } l = 0; @@ -264,12 +275,13 @@ int read_full_stream(FILE *f, char **contents, size_t *size) { return -ENOMEM; buf = t; + errno = 0; k = fread(buf + l, 1, n - l, f); if (k > 0) l += k; if (ferror(f)) - return -errno; + return errno > 0 ? -errno : -EIO; if (feof(f)) break; |