From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 21 Mar 2018 10:59:56 +0000 (+0100)
Subject: fileio: port parse_env_file_internal() to use _cleanup_free_ (#8511)
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=0146b714daa315edc45e3b5e895e3fe54233b8a0;p=elogind.git

fileio: port parse_env_file_internal() to use _cleanup_free_ (#8511)
---

diff --git a/src/basic/fileio.c b/src/basic/fileio.c
index 247309fe8..2e8991925 100644
--- a/src/basic/fileio.c
+++ b/src/basic/fileio.c
@@ -63,7 +63,6 @@ int write_string_stream_ts(
                 struct timespec *ts) {
 
         bool needs_nl;
-        int r;
 
         assert(f);
         assert(line);
@@ -88,13 +87,6 @@ int write_string_stream_ts(
                 if (fputc('\n', f) == EOF)
                         return -errno;
 
-        if (flags & WRITE_STRING_FILE_SYNC)
-                r = fflush_sync_and_check(f);
-        else
-                r = fflush_and_check(f);
-        if (r < 0)
-                return r;
-
         if (ts) {
                 struct timespec twice[2] = {*ts, *ts};
 
@@ -102,7 +94,10 @@ int write_string_stream_ts(
                         return -errno;
         }
 
-        return 0;
+        if (flags & WRITE_STRING_FILE_SYNC)
+                return fflush_sync_and_check(f);
+        else
+                return fflush_and_check(f);
 }
 
 static int write_string_file_atomic(
@@ -368,11 +363,11 @@ static int parse_env_file_internal(
                 void *userdata,
                 int *n_pushed) {
 
-        _cleanup_free_ char *contents = NULL, *key = NULL;
         size_t key_alloc = 0, n_key = 0, value_alloc = 0, n_value = 0, last_value_whitespace = (size_t) -1, last_key_whitespace = (size_t) -1;
-        char *p, *value = NULL;
-        int r;
+        _cleanup_free_ char *contents = NULL, *key = NULL, *value = NULL;
         unsigned line = 1;
+        char *p;
+        int r;
 
         enum {
                 PRE_KEY,
@@ -409,10 +404,8 @@ static int parse_env_file_internal(
                                 state = KEY;
                                 last_key_whitespace = (size_t) -1;
 
-                                if (!GREEDY_REALLOC(key, key_alloc, n_key+2)) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
+                                if (!GREEDY_REALLOC(key, key_alloc, n_key+2))
+                                        return -ENOMEM;
 
                                 key[n_key++] = c;
                         }
@@ -432,10 +425,8 @@ static int parse_env_file_internal(
                                 else if (last_key_whitespace == (size_t) -1)
                                          last_key_whitespace = n_key;
 
-                                if (!GREEDY_REALLOC(key, key_alloc, n_key+2)) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
+                                if (!GREEDY_REALLOC(key, key_alloc, n_key+2))
+                                        return -ENOMEM;
 
                                 key[n_key++] = c;
                         }
@@ -457,7 +448,7 @@ static int parse_env_file_internal(
 
                                 r = push(fname, line, key, value, userdata, n_pushed);
                                 if (r < 0)
-                                        goto fail;
+                                        return r;
 
                                 n_key = 0;
                                 value = NULL;
@@ -472,10 +463,8 @@ static int parse_env_file_internal(
                         else if (!strchr(WHITESPACE, c)) {
                                 state = VALUE;
 
-                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
+                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2))
+                                        return  -ENOMEM;
 
                                 value[n_value++] = c;
                         }
@@ -502,7 +491,7 @@ static int parse_env_file_internal(
 
                                 r = push(fname, line, key, value, userdata, n_pushed);
                                 if (r < 0)
-                                        goto fail;
+                                        return r;
 
                                 n_key = 0;
                                 value = NULL;
@@ -517,10 +506,8 @@ static int parse_env_file_internal(
                                 else if (last_value_whitespace == (size_t) -1)
                                         last_value_whitespace = n_value;
 
-                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
+                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2))
+                                        return -ENOMEM;
 
                                 value[n_value++] = c;
                         }
@@ -532,10 +519,8 @@ static int parse_env_file_internal(
 
                         if (!strchr(newline, c)) {
                                 /* Escaped newlines we eat up entirely */
-                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
+                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2))
+                                        return -ENOMEM;
 
                                 value[n_value++] = c;
                         }
@@ -547,10 +532,8 @@ static int parse_env_file_internal(
                         else if (c == '\\')
                                 state = SINGLE_QUOTE_VALUE_ESCAPE;
                         else {
-                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
+                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2))
+                                        return -ENOMEM;
 
                                 value[n_value++] = c;
                         }
@@ -561,10 +544,8 @@ static int parse_env_file_internal(
                         state = SINGLE_QUOTE_VALUE;
 
                         if (!strchr(newline, c)) {
-                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
+                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2))
+                                        return -ENOMEM;
 
                                 value[n_value++] = c;
                         }
@@ -576,10 +557,8 @@ static int parse_env_file_internal(
                         else if (c == '\\')
                                 state = DOUBLE_QUOTE_VALUE_ESCAPE;
                         else {
-                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
+                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2))
+                                        return -ENOMEM;
 
                                 value[n_value++] = c;
                         }
@@ -590,10 +569,8 @@ static int parse_env_file_internal(
                         state = DOUBLE_QUOTE_VALUE;
 
                         if (!strchr(newline, c)) {
-                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
-                                        r = -ENOMEM;
-                                        goto fail;
-                                }
+                                if (!GREEDY_REALLOC(value, value_alloc, n_value+2))
+                                        return -ENOMEM;
 
                                 value[n_value++] = c;
                         }
@@ -638,14 +615,12 @@ static int parse_env_file_internal(
 
                 r = push(fname, line, key, value, userdata, n_pushed);
                 if (r < 0)
-                        goto fail;
+                        return r;
+
+                value = NULL;
         }
 
         return 0;
-
-fail:
-        free(value);
-        return r;
 }
 
 static int check_utf8ness_and_warn(