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Suppress hardcoded table sizes

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. Use sizeof() instead of hardcoded values
. snprintf(..., size, ""...) is in error if the return code is >= size (not sufficient to set only ">")

Signed-off-by: Rachid Koucha <rachid.koucha@gmail.com>
This commit is contained in:
Rachid Koucha 2019-07-11 10:01:36 +02:00 committed by GitHub
parent 9b01795886
commit 6da7363420
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 4 deletions
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8
src/lxc/utils.c
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@ -1171,8 +1171,8 @@ int safe_mount(const char *src, const char *dest, const char *fstype,
if (srcfd < 0)
return srcfd;
ret = snprintf(srcbuf, 50, "/proc/self/fd/%d", srcfd);
if (ret < 0 || ret > 50) {
ret = snprintf(srcbuf, sizeof(srcbuf), "/proc/self/fd/%d", srcfd);
if (ret < 0 || ret >= (int)sizeof(srcbuf)) {
close(srcfd);
ERROR("Out of memory");
return -EINVAL;
@ -1191,8 +1191,8 @@ int safe_mount(const char *src, const char *dest, const char *fstype,
return destfd;
}
ret = snprintf(destbuf, 50, "/proc/self/fd/%d", destfd);
if (ret < 0 || ret > 50) {
ret = snprintf(destbuf, sizeof(destbuf), "/proc/self/fd/%d", destfd);
if (ret < 0 || ret >= (int)sizeof(destbuf)) {
if (srcfd != -1)
close(srcfd);