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-rw-r--r--wrapper.c34
1 files changed, 29 insertions, 5 deletions
diff --git a/wrapper.c b/wrapper.c
index 8d7dd31c4b..28290002b9 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -53,7 +53,7 @@ void *xmalloc(size_t size)
void *xmallocz(size_t size)
{
void *ret;
- if (size + 1 < size)
+ if (unsigned_add_overflows(size, 1))
die("Data too large to fit into virtual memory space.");
ret = xmalloc(size + 1);
((char*)ret)[size] = 0;
@@ -198,10 +198,22 @@ FILE *xfdopen(int fd, const char *mode)
int xmkstemp(char *template)
{
int fd;
+ char origtemplate[PATH_MAX];
+ strlcpy(origtemplate, template, sizeof(origtemplate));
fd = mkstemp(template);
- if (fd < 0)
- die_errno("Unable to create temporary file");
+ if (fd < 0) {
+ int saved_errno = errno;
+ const char *nonrelative_template;
+
+ if (!template[0])
+ template = origtemplate;
+
+ nonrelative_template = absolute_path(template);
+ errno = saved_errno;
+ die_errno("Unable to create temporary file '%s'",
+ nonrelative_template);
+ }
return fd;
}
@@ -321,10 +333,22 @@ int gitmkstemps(char *pattern, int suffix_len)
int xmkstemp_mode(char *template, int mode)
{
int fd;
+ char origtemplate[PATH_MAX];
+ strlcpy(origtemplate, template, sizeof(origtemplate));
fd = git_mkstemp_mode(template, mode);
- if (fd < 0)
- die_errno("Unable to create temporary file");
+ if (fd < 0) {
+ int saved_errno = errno;
+ const char *nonrelative_template;
+
+ if (!template[0])
+ template = origtemplate;
+
+ nonrelative_template = absolute_path(template);
+ errno = saved_errno;
+ die_errno("Unable to create temporary file '%s'",
+ nonrelative_template);
+ }
return fd;
}