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Expose format_hex_number_..., and rename it to ..._sigsafe().

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There are some other places in the code that will want a signal-safe
way to format numbers, so it shouldn't be static to util.c.
This commit is contained in:
Nick Mathewson 2013-07-15 12:26:55 -04:00
parent 449b2b7c58
commit 22977b7c1d
3 changed files with 12 additions and 12 deletions
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12
src/common/util.c
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@ -3402,9 +3402,8 @@ tor_join_win_cmdline(const char *argv[])
* function; it's designed to be used in code paths where you can't call
* arbitrary C functions.
*/
STATIC int
format_hex_number_for_helper_exit_status(unsigned int x, char *buf,
int max_len)
int
format_hex_number_sigsafe(unsigned int x, char *buf, int max_len)
{
int len;
unsigned int tmp;
@ -3490,8 +3489,8 @@ format_helper_exit_status(unsigned char child_state, int saved_errno,
cur = hex_errno;
/* Emit child_state */
written = format_hex_number_for_helper_exit_status(child_state,
cur, left);
written = format_hex_number_sigsafe(child_state, cur, left);
if (written <= 0)
goto err;
@ -3520,8 +3519,7 @@ format_helper_exit_status(unsigned char child_state, int saved_errno,
}
/* Emit unsigned_errno */
written = format_hex_number_for_helper_exit_status(unsigned_errno,
cur, left);
written = format_hex_number_sigsafe(unsigned_errno, cur, left);
if (written <= 0)
goto err;

7
src/common/util.h
View File

@ -518,11 +518,12 @@ int32_t tor_weak_random_range(tor_weak_rng_t *rng, int32_t top);
* <b>n</b> */
#define tor_weak_random_one_in_n(rng, n) (0==tor_weak_random_range((rng),(n)))
int format_hex_number_sigsafe(unsigned int x, char *buf, int max_len);
#ifdef UTIL_PRIVATE
/* Prototypes for private functions only used by util.c (and unit tests) */
STATIC int format_hex_number_for_helper_exit_status(unsigned int x, char *buf,
int max_len);
#ifndef _WIN32
STATIC int format_helper_exit_status(unsigned char child_state,
int saved_errno, char *hex_errno);
@ -532,6 +533,8 @@ STATIC int format_helper_exit_status(unsigned char child_state,
1 + sizeof(int) * 2 + 1)
#endif
#endif
const char *libor_get_digests(void);
#endif

5
src/test/test_util.c
View File

@ -2627,7 +2627,7 @@ test_util_spawn_background_partial_read(void *ptr)
}
/**
* Test for format_hex_number_for_helper_exit_status()
* Test for format_hex_number_sigsafe()
*/
static void
@ -2653,8 +2653,7 @@ test_util_format_hex_number(void *ptr)
(void)ptr;
for (i = 0; test_data[i].str != NULL; ++i) {
len = format_hex_number_for_helper_exit_status(test_data[i].x,
buf, HEX_ERRNO_SIZE);
len = format_hex_number_sigsafe(test_data[i].x, buf, HEX_ERRNO_SIZE);
test_neq(len, 0);
buf[len] = '\0';
test_streq(buf, test_data[i].str);