64 lines
2.0 KiB
Diff
64 lines
2.0 KiB
Diff
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From a3528342bc716ecdabdd86609ae5a3198f560870 Mon Sep 17 00:00:00 2001
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From: Karel Zak <kzak@redhat.com>
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Date: Tue, 23 Oct 2012 12:40:39 +0200
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Subject: [PATCH 11/11] misc: make readlink() usage more robust
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Signed-off-by: Karel Zak <kzak@redhat.com>
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---
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misc-utils/lsblk.c | 4 ++--
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misc-utils/lslocks.c | 2 +-
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sys-utils/eject.c | 2 +-
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3 files changed, 4 insertions(+), 4 deletions(-)
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diff --git a/misc-utils/lsblk.c b/misc-utils/lsblk.c
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index cc97c05..9c25dd0 100644
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--- a/misc-utils/lsblk.c
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+++ b/misc-utils/lsblk.c
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@@ -962,7 +962,7 @@ static int get_wholedisk_from_partition_dirent(DIR *dir, const char *dirname,
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int len;
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if ((len = readlink_at(dirfd(dir), dirname,
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- d->d_name, path, sizeof(path))) < 0)
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+ d->d_name, path, sizeof(path) - 1)) < 0)
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return 0;
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path[len] = '\0';
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@@ -1075,7 +1075,7 @@ static char *devno_to_sysfs_name(dev_t devno, char *devname, char *buf, size_t b
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return NULL;
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}
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- len = readlink(path, buf, buf_size);
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+ len = readlink(path, buf, buf_size - 1);
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if (len < 0) {
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warn(_("%s: failed to read link"), path);
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return NULL;
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diff --git a/misc-utils/lslocks.c b/misc-utils/lslocks.c
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index 45fb6de..495eb80 100644
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--- a/misc-utils/lslocks.c
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+++ b/misc-utils/lslocks.c
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@@ -196,7 +196,7 @@ static char *get_filename_sz(ino_t inode, pid_t pid, size_t *size)
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continue;
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if ((len = readlink_at(fd, path, dp->d_name,
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- sym, sizeof(path))) < 1)
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+ sym, sizeof(sym) - 1)) < 1)
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goto out;
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*size = sb.st_size;
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diff --git a/sys-utils/eject.c b/sys-utils/eject.c
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index 1a5b834..6d0da18 100644
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--- a/sys-utils/eject.c
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+++ b/sys-utils/eject.c
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@@ -837,7 +837,7 @@ static char *get_subsystem(char *chain, char *buf, size_t bufsz)
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memcpy(chain + len, SUBSYSTEM_LINKNAME, sizeof(SUBSYSTEM_LINKNAME));
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/* try if subsystem symlink exists */
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- sz = readlink(chain, buf, bufsz);
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+ sz = readlink(chain, buf, bufsz - 1);
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/* remove last subsystem from chain */
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chain[len] = '\0';
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--
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1.7.11.7
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