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improve error messages, and better symbol match

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This commit is contained in:
Brendan Gregg
2015-07-02 15:12:07 -07:00
parent 2be3c8d079
commit e203ba8c62
1 changed files with 4 additions and 3 deletions
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7
user/uprobe
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@@ -151,8 +151,8 @@ function set_path {
{ sub(/\..*/, "", $1); }
$1 == lib { print path "/" $3 }')
if [[ "$path" == "" ]]; then
die "ERROR: segment \"$name\" ambiguous.
program or library? Try a full path."
die "ERROR: segment \"$name\" ambiguous." \
"Program or library? Try a full path."
fi
fi
@@ -170,7 +170,7 @@ function set_addr {
[[ "$sym" == "" ]] && die "ERROR: missing symbol for $path"
addr=$(objdump -tT $path | awk -v sym=$sym '
$NF == sym { print $1; exit }')
$NF == sym && $4 == ".text" { print $1; exit }')
[[ "$addr" == "" ]] && die "ERROR: missing symbol \"$sym\" in $path"
(( 0x$addr == 0 )) && die "ERROR: failed resolving \"$sym\" in $path." \
"Maybe it exists in a different target (eg, library)?"
@@ -276,6 +276,7 @@ set -- $urest
if [[ $1 == *:* ]]; then
uname=; probe=$1; shift; uargs="$@"
else
[[ $2 != *:* ]] && die "ERROR: invalid probe. See usage (-h)."
uname=$1; probe=$2; shift 2; uargs="$@"
fi
path=$probe; path=${path%%:*}