[PATCH] Init errno before strto* calls.

[Arkadiusz Miśkiewicz]

Eric Sandeen noted that strtol(3) and friends require errno
initialization. From (fresh) man page:

NOTES
       Since  strtol()  can  legitimately  return  0,  LONG_MAX,
       or LONG_MIN (LLONG_MAX or LLONG_MIN for strtoll()) on both
       success and failure, the calling  program should set errno
       to 0 before the call, and then determine if an error
       occurred by checking  whether  errno  has  a non-zero
       value after the call.

So do it.
---
 libxcmd/input.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libxcmd/input.c b/libxcmd/input.c
index 397a124..711b527 100644
--- a/libxcmd/input.c
+++ b/libxcmd/input.c
@@ -153,6 +153,7 @@ cvtnum(
 	char		*sp;
 	int		c;
 
+	errno = 0;
 	i = strtoll(s, &sp, 0);
 	if ((i == LLONG_MIN || i == LLONG_MAX) && errno == ERANGE)
 		return -1LL;
@@ -239,6 +240,7 @@ cvttime(
 	unsigned long	i;
 	char		*sp;
 
+	errno = 0;
 	i = strtoul(s, &sp, 0);
 	if (i == ULONG_MAX && errno == ERANGE)
 		return 0;
@@ -348,6 +350,7 @@ prid_from_string(
 	 * Allow either a full numeric or a valid projectname, even
 	 * if it starts with a digit.
 	 */
+	errno = 0;
 	prid_long = strtoul(project, &sp, 10);
 	if (*project != '\0' && *sp == '\0') {
 		if ((prid_long == ULONG_MAX && errno == ERANGE)
@@ -369,6 +372,7 @@ uid_from_string(
 	unsigned long	uid_long;
 	char		*sp;
 
+	errno = 0;
 	uid_long = strtoul(user, &sp, 10);
 	if (sp != user) {
 		if ((uid_long == ULONG_MAX && errno == ERANGE)
@@ -390,6 +394,7 @@ gid_from_string(
 	unsigned long	gid_long;
 	char		*sp;
 
+	errno = 0;
 	gid_long = strtoul(group, &sp, 10);
 	if (sp != group) {
 		if ((gid_long == ULONG_MAX && errno == ERANGE)
-- 
2.0.1