forked from pool/util-linux
69 lines
2.4 KiB
Diff
69 lines
2.4 KiB
Diff
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From 47dea49b4cb4a4a98a6c518cc17f6d2c92be9528 Mon Sep 17 00:00:00 2001
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From: Karel Zak <kzak@redhat.com>
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Date: Tue, 24 Apr 2012 11:57:32 +0200
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Subject: [PATCH] libmount: add special MNT_ERR_ codes
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... to detect some situations where standard -errno is too generic.
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Petr Uzel <petr.uzel@suse.cz>
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---
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libmount/src/context.c | 20 ++++++++++----------
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libmount/src/libmount.h.in | 12 ++++++++++++
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2 files changed, 22 insertions(+), 10 deletions(-)
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Index: util-linux-2.21.2/libmount/src/context.c
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===================================================================
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--- util-linux-2.21.2.orig/libmount/src/context.c
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+++ util-linux-2.21.2/libmount/src/context.c
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@@ -1186,7 +1186,7 @@ int mnt_context_prepare_srcpath(struct l
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if (cache)
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path = mnt_resolve_tag(t, v, cache);
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- rc = path ? mnt_fs_set_source(cxt->fs, path) : -EINVAL;
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+ rc = path ? mnt_fs_set_source(cxt->fs, path) : -MNT_ERR_NOSOURCE;
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} else if (cache && !mnt_fs_is_pseudofs(cxt->fs)) {
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/*
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@@ -1247,7 +1247,7 @@ int mnt_context_prepare_target(struct li
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cache = mnt_context_get_cache(cxt);
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if (cache) {
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char *path = mnt_resolve_path(tgt, cache);
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- if (strcmp(path, tgt))
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+ if (path && strcmp(path, tgt) != 0)
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rc = mnt_fs_set_target(cxt->fs, path);
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}
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@@ -1543,7 +1543,7 @@ static int apply_table(struct libmnt_con
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}
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if (!fs)
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- return -EINVAL;
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+ return -MNT_ERR_NOFSTAB; /* not found */
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DBG(CXT, mnt_debug_h(cxt, "apply entry:"));
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DBG(CXT, mnt_fs_print_debug(fs, stderr));
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Index: util-linux-2.21.2/libmount/src/libmount.h.in
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===================================================================
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--- util-linux-2.21.2.orig/libmount/src/libmount.h.in
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+++ util-linux-2.21.2/libmount/src/libmount.h.in
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@@ -115,6 +115,18 @@ enum {
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MNT_ACT_UMOUNT
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};
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+/*
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+ * Errors -- by default libmount returns -errno for generic errors (ENOMEM,
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+ * EINVAL, ...) and for mount(2) errors, but for some specific operations it
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+ * returns private error codes. Note that maximum system errno value should be
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+ * 4095 on UNIXes.
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+ *
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+ * See also mnt_context_get_syscall_errno() and mnt_context_get_helper_status().
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+ */
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+#define MNT_ERR_NOFSTAB 5000 /* not found required entry in fstab */
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+#define MNT_ERR_NOFSTYPE 5001 /* failed to detect filesystem type */
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+#define MNT_ERR_NOSOURCE 5002 /* required mount source undefined */
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+
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/* init.c */
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extern void mnt_init_debug(int mask);
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